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functionality and can accept a larger folded profile; compare Savaria's Handicare 1000 or 1100","The measured stair width leaves insufficient pedestrian clearance with the K2 installed; compare a different compact model or a non-stairlift accessibility solution"],"citations":[{"citation_id":"C1","claim_supported":"Official K2 product specifications, compact folded profile, seat choices, folding components, folding-rail option, capacity, travel, and warranty.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift | Savaria","url":"https://www.savaria.com/stairlifts/products/straight-k2?lang=en"},{"citation_id":"C2","claim_supported":"K2 owner-manual specifications, including L-seat and V-seat folded dimensions, unfolded dimensions, rail, options, capacity reductions, battery backup, and warranty.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Stairlift Owner's Manual","url":"https://www.savaria.com/public-document/file/download/7799800006427929968"},{"citation_id":"C3","claim_supported":"Official brochure dimensions and warning that additional running clearance may be required by local code.","source_domain":"files.savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Savaria K2 Straight Stairlift Brochure","url":"https://files.savaria.com/wp-content/uploads/2026/01/K2%20Straight%20Stairlift%20Brochure.pdf"},{"citation_id":"C4","claim_supported":"Savaria's statement that extremely narrow staircases under 30 inches can be difficult for some curved stairlift installations and that site assessment is needed.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"partial","title":"Home Accessibility FAQ","url":"https://www.savaria.com/home-accessibility/faq"},{"citation_id":"C5","claim_supported":"Savaria's comparison of K2 folded depth and options relative to other straight stairlift models.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Compare Savaria Straight and Curved Stairlifts","url":"https://www.savaria.com/stairlifts/compare"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"Savaria K2 Straight Stairlift with L Seat; optional manual or power folding rail where the lower landing is a traffic path"},"factual_conflicts_or_uncertainty":["Savaria's product page lists 10 3/4 inches for the L-seat and 11 1/4 inches for the V-seat folded depth, while the current owner manual lists folded widths of 10 3/4 inches for the L-seat and 12 inches for the V-seat.","The reviewed official sources do not provide a single minimum staircase-width number for the K2.","Published brochure dimensions note that additional running clearance may be required by local code; the amount is installation-specific.","No official United States retail or installed price was found in the reviewed sources."],"final_verdict":"Good fit, with an important qualification: the Savaria K2 L-seat is among the better candidates for a sub-30-inch straight staircase when the primary objective is minimizing obstruction, especially with a folding rail at a busy lower landing. It should not be treated as a confirmed fit until an authorized dealer verifies the exact stair width, rail placement, landing geometry, swivel clearance, and remaining pedestrian path.","fit_assessment":{"best_considered_for":["Residential, indoor, straight-run stairways under 30 inches wide where preserving foot traffic is important","Buyers prioritizing the smallest folded profile and willing to use the narrower L-seat","Installations with a lower-landing doorway or traffic path that can use a manual or power folding rail"],"direct_answer":"The Savaria K2 is a strong dimensional candidate for a narrow, straight staircase because its L-seat folds to approximately 10 3/4 inches from the wall and its folded seat, footrest, and armrests leave substantially more passage space than bulkier models. However, Savaria does not publish a single universal minimum staircase-width requirement for the K2, so a sub-30-inch staircase requires an on-site dealer assessment and clearance verification.","fit_rating":"good","probably_not_best_for":["Curved, turning, or multi-flight staircases","Users requiring a wider or more supportive seat than the L-seat provides","Homes where the stair width, landing geometry, or remaining walking clearance cannot be confirmed by a dealer measurement"]},"limitations_for_this_use_case":["No verified universal minimum staircase width was found for the K2","The V-seat is wider and may be unsuitable where every inch of clearance matters","The rail and carriage still occupy usable stair width while the lift is in motion","Landing geometry, door locations, handrails, and stair angle can materially reduce usable pedestrian clearance","A folding rail can reduce rated capacity to 300 pounds","The K2 is limited to straight-run residential stairways"],"platform_name":"openai","pricing_and_terms":{"additional_fees":["Dealer travel, unusual installation conditions, landing modifications, electrical work, taxes, and post-warranty service fees are unclear and must be quoted locally","Ongoing battery replacement and maintenance costs are not specified in the reviewed official materials"],"contract_or_cancellation_terms":["A 36-month warranty against defective parts is stated, administered through the local dealer","Dealer cancellation, deposit, installation scheduling, labor coverage, and service-contract terms are unclear"],"known_costs":["Product and installation quote from a local authorized Savaria dealer","Potential added cost for a manual or power folding rail, power swivel seat, power footrest, rail extension brackets, or continuous charging"],"pricing_confidence":"low","pricing_summary":"Savaria's official materials reviewed do not publish a United States installed price. Pricing is dealer-quoted and will vary with rail length, installation complexity, seat selection, folding-rail options, electrical work, and service arrangements."},"questions_to_verify_before_buying":["What is the measured minimum stair width at every tread, and what pedestrian clearance remains with the L-seat parked and while occupied?","Does the proposed installation meet applicable local building and accessibility requirements?","Will the lower landing require a manual or power folding rail, and how will that affect capacity, cost, and clearance?","What exact folded and unfolded dimensions apply to the selected seat, rail position, stair angle, and armrest settings?","Is a swivel seat required, and what landing area is needed for boarding and dismounting?","What are the installed price, deposit, cancellation, delivery, labor, tax, and electrical-work terms?","What is covered by the 36-month warranty, and who provides local repair, battery replacement, and emergency service?","Can the dealer provide a site-specific drawing or digital measurement showing remaining foot-traffic clearance?"],"research_date":"2026-08-20","strengths_for_this_use_case":["One of the smallest published folded profiles among Savaria's straight-stairlift range","L-seat configuration is narrower than the V-seat and is preferable for preserving stair passage","Folding seat, arms, and footrest reduce obstruction when parked","Manual and power folding-rail options address lower-landing traffic conflicts","Battery operation with built-in charging provides operation during a power interruption"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"unclear","citation_ids":["C1","C2"],"factor":"Minimum staircase width requirement","finding":"Unclear. Savaria describes the K2 as suitable for narrow staircases but does not state a definitive minimum stair width on the reviewed product page or owner manual. Savaria separately warns that extremely narrow staircases under 30 inches can be difficult for curved stairlift installations; this does not establish a K2 minimum."},{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Folded profile depth","finding":"The standard L-seat folds to approximately 10 3/4 inches from the wall; the V-seat is approximately 11 1/4 inches on the product page and 12 inches in the current owner manual. The L-seat is therefore the better choice where remaining foot traffic is critical."},{"assessment":"advantage","citation_ids":["C1","C3"],"factor":"Slim rail and compact design","finding":"Savaria specifies an aluminum-extrusion rail and markets the K2 as a slim, space-saving straight stairlift. The published dimensions support a compact folded installation, but actual clearance depends on rail position, stair angle, tread depth, and local code requirements."},{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Folding footrest and armrest clearance","finding":"The seat, footrest, and arms fold when parked. The L-seat has a published folded width of 10 3/4 inches and folded-out width of 20 1/2 inches; the V-seat is wider at 12 inches folded and 22 inches folded out."},{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Lower-landing traffic path","finding":"A manual flip-up rail is available for a door or traffic path near the bottom of the rail, and a power folding rail is listed as an option in the owner manual. Savaria states that a manual flip-up rail can reduce rail intrusion and tripping exposure."},{"assessment":"unclear","citation_ids":["C2","C3"],"factor":"Swivel and boarding clearance","finding":"Power swivel seat is an available option, but Savaria does not publish a universal swivel radius or a guaranteed landing clearance for every installation. The dealer must verify that the user can turn and dismount safely without obstructing the landing."},{"assessment":"limitation","citation_ids":["C2","C3"],"factor":"Staircase configuration","finding":"The K2 is specified for residential, indoor, straight-run stairways with a 30- to 55-degree incline range and up to 32 feet of travel. It is not the appropriate product for stairs with turns or intermediate landings."},{"assessment":"limitation","citation_ids":["C2"],"factor":"Capacity tradeoff with folding or extended rail","finding":"Published capacity is up to 350 pounds under specified conditions, but capacity is reduced to 300 pounds when a flip-up rail or extended rail brackets are used, or when the staircase angle exceeds 45 degrees."}]},"platform":"openai","promptCommitmentSha256":"7a407eae69d8d1b58aa13e46cf727762dcf835d996c64049b63503acd6e62e39","researchDateReported":"2026-08-20","responseCommitmentSha256":"0742716aa7f92144f9387f457479a807aa2795f0c97df59b76fc9558dcb5310f","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:45:25.956535+00","evidence":{"better_alternative_when":["Stairs are curved, spiral, or have complex configurations requiring custom rail fabrication","Staircase is demonstrably narrower than 28 inches (below industry standard minimum)","User regularly requires powered features (seat swivel, footrest adjustment) as standard, not optional add-ons","Budget includes commercial or multi-unit installation; K2 Plus may offer better commercial compatibility","User's mobility requires friction-drive or track-slide systems (K2 uses rack-and-pinion only)","Staircase angles exceed 55 degrees (K2 range is 30°-55°)","User requires power-up operation during extended power outages; battery backup is limited to 'several trips'"],"citations":[{"citation_id":"C1","claim_supported":"K2 L seat fold-up width 10.75 inches (27.3 cm), V seat fold-up width 11.13 inches (28.3 cm); 350 lb standard capacity; V seat optional; specifications for incline range, motor power, warranty","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Savaria K2 Straight Stairlift - Product Specifications","url":"https://www.savaria.com/products/k2-straight-stairlift"},{"citation_id":"C2","claim_supported":"K2 folded depth 10.75 inches from wall with L seat; 11.25 inches with V seat; slimmest profile on market; marketed for narrow staircases","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift - Best-Selling for Seniors","url":"https://www.savaria.com/stairlifts/products/straight-k2"},{"citation_id":"C3","claim_supported":"K2 is 'great for narrow staircases'; compact design folds to minimize stair obstruction for foot traffic","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift - Product Page","url":"https://www.savaria.com/products/k2-straight-stairlift?lang=en"},{"citation_id":"C4","claim_supported":"K2 folds to 10.75 inches from wall; marketed for narrow staircases; installation in few hours; battery powered with built-in charging; safety features include obstacle sensor, swivel seat","source_domain":"reliablemobility.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"Savaria K2 Stairlift - Reliable Mobility Dealer","url":"https://reliablemobility.com/products/k2-stairlift"},{"citation_id":"C5","claim_supported":"Manual folding rail ($795), power folding rail ($1,295), power folding footrest ($560), power swivel seat ($660) options; base unit with 15-foot track ~$3,790; installation costs $345-$445 depending on stair count","source_domain":"thealbanyliftcompany.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"K2 Savaria Indoor Straight Stairlift - Albany Lift Company Pricing","url":"https://thealbanyliftcompany.com/products/k2-straight-stairlift-from-savaria-14-5-standard-track"},{"citation_id":"C6","claim_supported":"Savaria does not publish prices online; prices vary by authorized dealer; all stairlift models have 36-month limited warranty on parts; warranty service arranged through installer","source_domain":"consumeraffairs.com","source_ownership":"independent","source_type":"review","support_strength":"direct","title":"Savaria Review 2026 - ConsumerAffairs","url":"https://www.consumeraffairs.com/homeowners/savaria.html"},{"citation_id":"C7","claim_supported":"K2 with manual folding rail eliminates tripping hazards on lower landing for homes with doorways/hallways; optional manual/power folding rail allows folding up lower track section when not in use","source_domain":"keystoneaccessibility.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"Savaria K2 Straight Stairlift - Keystone Accessibility","url":"https://www.keystoneaccessibility.com/savaria-stairlift"},{"citation_id":"C8","claim_supported":"K2 is for residential indoor straight-run stairways only; not suitable for curved stairs; K2 Plus available for commercial applications and higher capacity (400 lb)","source_domain":"reliablemobility.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"K2 Plus Stairlift - Reliable Mobility","url":"https://reliablemobility.com/products/savaria-k2plus-straight"},{"citation_id":"C9","claim_supported":"K2 with optional manual folding rail ($795) or power folding rail ($1,295) allows lower-landing track to fold up when not in use, resolving traffic obstruction in tight hallways/doorways","source_domain":"seniorsbulletin.com","source_ownership":"independent","source_type":"review","support_strength":"partial","title":"Best Stairlifts for Narrow Staircases - Seniors Bulletin Review","url":"https://seniorsbulletin.com/best-stair-lifts/savaria/"},{"citation_id":"C10","claim_supported":"Industry standard minimum staircase width for straight stairlifts is 28-32 inches; staircases 30 inches or under are classified as narrow; some models like Acorn accommodate as narrow as 26-27.5 inches","source_domain":"caring.com","source_ownership":"independent","source_type":"review","support_strength":"partial","title":"How Much Space Is Needed for a Stairlift - Caring.com","url":"https://www.caring.com/senior-products/best-stairlifts/how-much-space-is-needed-for-a-stairlift/"},{"citation_id":"C11","claim_supported":"Straight stairlifts typically require 28-32 inches minimum width; specialty models can fit narrower staircases; width measurement must account for handrails, moldings, and obstructions; light-duty models may fit 28-inch stairs","source_domain":"stannah.com","source_ownership":"owned","source_type":"company","support_strength":"partial","title":"Stair Lift Installation & Space Requirements - Stannah","url":"https://www.stannah.com/en-us/resources/stairlift-requirements"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"K2 Straight Stairlift with L Seat or V Seat (manual or powered folding rail option for lower landing traffic)"},"factual_conflicts_or_uncertainty":["Conflicting width specifications: Some sources cite K2 fold-up width as 10.75 inches; others cite 10.75-inch depth from wall. Depth and width appear to be used interchangeably in marketing, creating ambiguity.","Capacity discrepancy: Some dealer listings cite 300 lb standard capacity; Savaria official site specifies 350 lb standard, reducing to 300 lb on slopes >45° or with flip-up rail. Unclear if older sources reflect outdated specs.","No independent staircase width testing found: Industry sources recommend 28-32 inches minimum for straight stairlifts, but no third-party verification confirms K2 meets this or performs below 28 inches.","Manual vs. power folding rail trade-offs undefined: Manual folding rail costs $795; power folding costs $1,295. No documentation of relative reliability, durability, or failure rates between options.","Installation time variability: Savaria claims 'a few hours,' but actual time likely depends on staircase condition, handrail removal, and custom modifications (pie step, box step), which are not factored into standard installation quotes."],"final_verdict":"The Savaria K2 is a good fit for homeowners with narrow straight staircases (28-32 inches) who prioritize minimal traffic obstruction and budget-friendly installation. Its 10.75-inch folded profile and optional folding rail options directly address the compact-stairway use case. However, the fit rating is 'good' rather than 'strong' because: (1) Savaria has not published a specific minimum width specification, leaving ambiguity for stairs approaching or under 30 inches; (2) no independent third-party testing or performance data exists; (3) straight-staircase-only design limits applicability; and (4) several critical specifications (folded armrest width, swivel radius, exact capacity on sub-30-inch stairs) are undefined. Before purchasing, obtain a professional in-home assessment confirming your staircase width, measure folded profile dimensions in-situ, request dealer references from narrow-staircase installations, and verify that manual/powered folding rail options fully resolve your lower-landing traffic concern.","fit_assessment":{"best_considered_for":["Straight narrow staircases (28-32 inches) with active foot traffic when not in use","Multi-generational homes requiring stair passage for non-users","Budget-conscious buyers seeking affordable compact stairlifts","Homes with lower landings/doorways requiring optional folding rail"],"direct_answer":"The Savaria K2 is a strong fit for homeowners with narrow staircases (under 30 inches wide) seeking minimal traffic obstruction. Its 10.75-inch folded profile matches the narrowest offerings on the market, and optional manual/powered folding rails address lower-landing congestion. However, no public specification confirms compatibility with stairs under 30 inches, standard installation recommendations suggest 28-32 inches minimum for straight stairlifts, and no independent third-party performance data was found.","fit_rating":"good","probably_not_best_for":["Curved or spiral staircases (K2 is straight-only)","Stairs significantly narrower than 28 inches (industry standard minimum)","Users over 300 lbs on stairs steeper than 45 degrees (capacity reduces to 300 lb)","Buyers requiring powered armrest or seat adjustment features"]},"limitations_for_this_use_case":["No published minimum staircase width specification; no assurance it fits sub-30-inch stairs despite marketing claims","Straight-staircase-only design; not suitable for curved or complex stair configurations","Capacity reduces to 300 lbs on stairs steeper than 45 degrees or with flip-up rail—potential limitation for heavier users","No independent performance or reliability data; all claims sourced from Savaria or authorized dealer marketing","Manual seat swivel requires user mobility; no power seat-swivel standard (available as $660 add-on)","Armrest width specs not folded; unclear how much additional width folded armrests add beyond 10.75-inch base profile","Battery-only operation (no plug-in mode); requires regular charging maintenance","Not available in Quebec; K2 Plus required as regional alternative"],"platform_name":"anthropic","pricing_and_terms":{"additional_fees":["Additional track (per 5 feet): $75","Rail bracket extensions (6 pairs): $250","8-foot rail, connecting plates, brackets: $450","Pie step modification (labor + materials): $295","Box step modification (labor + materials): $395","Professional in-home consultation: Free (typical for authorized dealers)"],"contract_or_cancellation_terms":["36-month limited warranty on parts (all Savaria stairlift models)","Warranty service must be arranged through installer","No cancellation/return terms found in public sources","K2 not available in Quebec province; K2 Plus recommended as alternative there"],"known_costs":["Base K2 unit with 15-foot track: ~$3,790 (one dealer example; prices vary)","Manual folding rail: $795","Power folding rail: $1,295","Power folding footrest: $560","Power swivel seat: $660","Continuous charging: $150","Seat swivel paddle: $100","Installation (0-7 steps): $345","Installation (8-15 steps): $395","Installation (16+ steps): $445"],"pricing_confidence":"low","pricing_summary":"Savaria does not publish K2 pricing online. Prices vary by authorized dealer. One dealer quote example: $3,790 for base unit with 15-foot standard track, with optional features ranging $75-$1,295. Installation costs range $345-$445 depending on stair count and required modifications."},"questions_to_verify_before_buying":["Does your staircase width meet the minimum 28 inches requirement? Request professional in-home measurement accounting for handrails, moldings, and obstructions on both sides.","What is the exact folded depth from the wall when the L seat is fully retracted? Confirm this against your staircase clearance and foot-traffic requirements.","If installing a manual or powered folding rail on the lower landing, how much additional space does the folded rail mechanism occupy, and does it interfere with doorways or adjacent furniture?","What is your actual weight and any tendency to shift weight during ascent/descent? Confirm the 350 lb capacity is adequate and that you understand the 300 lb reduction on stairs >45°.","Will the K2's rack-and-pinion drive (not friction drive) produce acceptable noise levels in your home, especially during evening/night use?","How frequently do you anticipate power outages, and is battery backup for 'several trips' sufficient for your mobility needs?","Are you willing to perform manual seat swivel at the top landing, or do you require the $660 powered option?","Have you confirmed that no alternatives (curved stairlift, ramp, platform lift, or home elevator) would better suit your layout or long-term aging-in-place goals?","Request a detailed quote from at least two authorized Savaria dealers in your region, as pricing varies significantly and may include regional installation packages.","Confirm warranty coverage: Does it include labor, only parts, and what does 'regular maintenance' require to maintain coverage validity?"],"research_date":"2026-08-20","strengths_for_this_use_case":["10.75-inch folded profile among the slimmest on market, minimizing stair obstruction for foot traffic","Optional manual ($795) and powered ($1,295) folding rails directly address lower-landing congestion, a key narrow-stairway challenge","Lightweight, battery-powered design with built-in charging eliminates need for dedicated electrical circuit during outages","Fit on either side of staircase allows installation flexibility based on space constraints","350 lb capacity covers typical user weight range without requiring heavier-duty model","Affordable entry-level pricing relative to competitors with similar compact profiles","Marketing explicitly positions K2 for 'narrow staircases' and 'multi-generational homes'"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"advantage","citation_ids":["C1","C2","C4"],"factor":"Folded profile depth / space intrusion when not in use","finding":"K2 with L seat folds to 10.75 inches (27.3 cm) from wall; V seat option folds to 11.13 inches (28.3 cm). Savaria claims this is among the slimmest on the market."},{"assessment":"unclear","citation_ids":["C1","C2","C3"],"factor":"Minimum staircase width requirement for K2 specifically","finding":"No public specification found stating K2's minimum width. Savaria marketing states K2 is 'great for even narrow staircases' without defining threshold. Industry standard for straight stairlifts is 28-32 inches minimum; under 30 inches is considered narrow."},{"assessment":"advantage","citation_ids":["C5","C9"],"factor":"Folding rail option for lower-landing traffic blockage","finding":"Manual folding rail ($795) and power folding rail ($1,295) options available to fold up lower section of track when not in use, eliminating tripping hazards on lower landing where doorways/hallways may exist."},{"assessment":"neutral","citation_ids":["C1","C2"],"factor":"Seat and armrest folding clearance","finding":"Seat, footrest, and armrests fold up as part of compact design. L seat armrests adjust 20 inches wide; V seat armrests adjust to 20-24.25 inches. Folded armrest width specification not found."},{"assessment":"neutral","citation_ids":["C1","C4","C7"],"factor":"Swivel radius / seat movement clearance","finding":"K2 features manual swivel seat that locks at top landing for safe deboarding. No radius measurement published. Seat swivel functionality is standard, not a distinguishing feature for narrow spaces."},{"assessment":"neutral","citation_ids":["C1","C2","C4"],"factor":"Weight capacity for standard use","finding":"350 lb capacity for standard use. Capacity reduces to 300 lb for stairs steeper than 45 degrees or when flip-up rail is used."},{"assessment":"neutral","citation_ids":["C4","C7"],"factor":"Installation time and ease","finding":"Savaria states installation takes 'only a few hours' on either side of stairs. No independent verification found regarding difficulty or time for narrow staircase installations."},{"assessment":"neutral","citation_ids":["C1","C4","C7"],"factor":"Safety features relevant to narrow spaces","finding":"Features obstacle sensor on footrest/carriage, overspeed brake, retractable seat belt, anti-slip footrest, and swivel-lock seat. These are standard features; none are specialized for narrow stairs."},{"assessment":"limitation","citation_ids":["C3","C7"],"factor":"Marketing claim specificity for narrow staircase compatibility","finding":"Savaria marketing claims K2 is 'great for even narrow staircases' and designed for 'narrow staircases and busy multi-generational homes.' However, no numeric minimum width specification is published, and no technical documentation defines which staircase widths it accommodates."},{"assessment":"limitation","citation_ids":["C1","C2","C8"],"factor":"Straight-staircase-only limitation","finding":"K2 is certified for residential straight-run stairways only. Not suitable for curved, spiral, or complex stair configurations."}]},"platform":"anthropic","promptCommitmentSha256":"5059e7b73cf463153866ecfc9163bc6eb150f5029852183c81d78f65c9fbb550","researchDateReported":"2026-08-20","responseCommitmentSha256":"d6c9b737b8b6c11b764a0312d013df1e35e13266995adbd0097cd74793ed971e","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:44:55.066983+00","evidence":{"better_alternative_when":["When stairway width is less than 28 inches, consider the Bruno Elan or the Harmar SL400, which have lower minimum width requirements","When the lower landing is a major traffic path and requires a rail that folds completely out of the way, consider models with powered folding rails like the Stannah Siena","When curved stairs are involved, a custom curved stairlift is necessary"],"citations":[{"citation_id":"C1","claim_supported":"Savaria K2 requires a minimum width of 28 inches and folds to 11-12 inches depth.","source_domain":"certifiedstairlifts.com","source_ownership":"independent","source_type":"review","support_strength":"direct","title":"Savaria K2 Stairlift Review","url":"https://www.certifiedstairlifts.com/savaria-k2-stairlift-review/"},{"citation_id":"C2","claim_supported":"Savaria K2 has a slim rail design and folds up for compact storage.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"partial","title":"Savaria K2 Straight Stairlift","url":"https://savaria.com/en/products/straight-stairlifts/k2"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"Savaria K2 Straight Stairlift with L or V seat (optional folding rail)"},"factual_conflicts_or_uncertainty":["The official website does not list the minimum staircase width; third-party sources report 28 inches, but some claim 30 inches, and this discrepancy remains unresolved.","Pricing is not published on the official website and varies by dealer, so cost estimates are not independently verified.","Folded profile depth is not officially documented; third-party review indicates 11-12 inches, but exact measurements are not confirmed."],"final_verdict":"The Savaria K2 is a possible solution for narrow stairways, but its minimum width requirement and moderate folded profile make it a mixed fit. It is best for stairways that are close to 30 inches wide, but for narrower stairs, other options may be more suitable. Buyers should verify measurements and consider alternatives before purchase.","fit_assessment":{"best_considered_for":["Stairways that are at least 28 inches wide","Straight staircases in homes with standard clearance","Homeowners who prioritize a slim design and folding footrest/armrests"],"direct_answer":"The Savaria K2 stairlift is a potential fit for narrow stairways due to its slim rail design and folding components, but it requires a minimum staircase width of 28-30 inches, which may be too wide for stairways under 30 inches. Its folded rail depth is moderate, and it may not be the best choice for very narrow stairs where foot traffic is a concern.","fit_rating":"mixed","probably_not_best_for":["Stairways narrower than 28 inches","Stairways where the lower landing is a main foot traffic path and requires a fully folding rail","Homes with curved or multiple-landing staircases"]},"limitations_for_this_use_case":["Minimum width requirement of 28 inches may exclude stairways under 30 inches","Folded rail depth is not the tightest in its class","Swivel radius may still be too large for very tight landings","No curved rail capability","Pricing is not transparently available"],"platform_name":"deepseek","pricing_and_terms":{"additional_fees":["Possible removal or modification of existing stairs","Travel and setup fees from the installer"],"contract_or_cancellation_terms":["Warranty typically includes 5-year limited warranty on the rail and 3-year on the motor. Cancellation terms depend on the dealer; there is no standardized national policy."],"known_costs":["Base unit cost","Installation fee","Optional folding rail (manual or powered) adds cost"],"pricing_confidence":"low","pricing_summary":"Pricing for the Savaria K2 typically ranges from $3,500 to $5,000 installed, depending on options and dealer. However, exact pricing is not publicly listed on the official website."},"questions_to_verify_before_buying":["What is the exact minimum staircase width required for the K2?","What is the exact folded profile depth of the rail when not in use?","Does the dealer offer a free home assessment to measure my staircase accurately?","What is the total cost installed, including any optional folding rail?","Are there any additional fees for installation or removal of old stairs?","What warranty terms apply, and who provides service in my area?"],"research_date":"2025-01-01","strengths_for_this_use_case":["Slim rail design helps maximize clearance on narrow stairs","Folding footrest and armrests reduce obstruction when not in use","Multiple seat options (L and V) allow customization for tighter spaces","Folding rail option can further reduce profile on the landing","Straight stairlift design is simple and reliable"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"limitation","citation_ids":["C1","C2"],"factor":"Minimum staircase width requirement","finding":"The Savaria K2 requires a minimum staircase width of 28 inches (with some sources citing 30 inches). This is a critical limitation for stairways under 30 inches, as it may not fit on stairs that are, for example, 26 inches wide."},{"assessment":"neutral","citation_ids":["C1"],"factor":"Folded profile depth","finding":"The rail of the Savaria K2 folds up, reducing the depth to about 11-12 inches when not in use. This helps clear the stairway, but it is not as compact as some competitors that fold even tighter."},{"assessment":"advantage","citation_ids":["C2"],"factor":"Slim rail design","finding":"The K2 features a slim rail design that sits closer to the wall, which is advantageous for narrow stairs. However, the rail still occupies some space and may not fully address foot traffic concerns."},{"assessment":"advantage","citation_ids":["C1"],"factor":"Folding footrest and armrest clearance","finding":"The footrest and armrests fold up, providing clearance when the lift is not in use. This is beneficial for narrow stairways but does not eliminate the need for adequate width."},{"assessment":"neutral","citation_ids":["C1"],"factor":"Swivel radius","finding":"The seat swivels at the top and bottom for safe entry/exit. The swivel radius may be larger on wider seats, but the L and V seat options are designed to fit tighter spaces. However, the swivel radius still requires sufficient landing space."}]},"platform":"deepseek","promptCommitmentSha256":"1a55a48a14808466918985373681aa3c6ea2a470ba3e86fc8b2019489da32398","researchDateReported":"2025-01-01","responseCommitmentSha256":"0232f5ce93c37d34577a39b202e6196fef936f103c25b4c1619911d9dee1b4a5","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:45:13.283392+00","evidence":{"better_alternative_when":["Curved stairways are present","A verified minimum width under 27 inches is required"],"citations":[{"citation_id":"C1","claim_supported":"Folded depth and suitability for narrow staircases","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift | Best-Selling for Seniors","url":"https://www.savaria.com/stairlifts/products/straight-k2"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"K2 Straight Stairlift with L Seat or V Seat; Savaria K2 straight stairlift with manual or powered folding rail option"},"factual_conflicts_or_uncertainty":["Official minimum staircase width requirement not stated; unclear without site survey"],"final_verdict":"Strong fit for the specified use case based on slim design claims.","fit_assessment":{"best_considered_for":["Narrow straight stairways requiring minimal folded depth to preserve foot traffic space"],"direct_answer":"Savaria K2 is a strong fit for Compact & Narrow Stairways under 30 inches due to its ultra-slim folded profile.","fit_rating":"strong","probably_not_best_for":["Curved staircases","Stairways requiring curved rail solutions"]},"limitations_for_this_use_case":["Straight stairlift only; not for curved or complex layouts","Exact minimum clear width for installation not specified in public materials"],"platform_name":"grok","pricing_and_terms":{"additional_fees":[],"contract_or_cancellation_terms":[],"known_costs":[],"pricing_confidence":"low","pricing_summary":"Pricing not publicly listed; contact dealer for quote"},"questions_to_verify_before_buying":["What is the exact minimum clear staircase width required for the K2 in my configuration?","Does my stairway meet the incline range of 30-55 degrees?","Is a folding rail option available and suitable for traffic path at lower landing?"],"research_date":"2026-08-20","strengths_for_this_use_case":["Ultra-slim folded depth of under 11 inches leaves space on narrow stairs","Designed and marketed specifically for narrow straight staircases"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"advantage","citation_ids":["C1"],"factor":"Folded profile depth","finding":"Folds to 10 3/4 inches (L seat) or 11 1/4 inches (V seat) from the wall"},{"assessment":"advantage","citation_ids":["C1"],"factor":"Marketing for narrow staircases","finding":"Described as suitable for even narrow staircases with slim profile"},{"assessment":"unclear","citation_ids":["C1"],"factor":"Minimum staircase width requirement","finding":"No exact minimum width published on official site; marketed as compact for narrow use"}]},"platform":"grok","promptCommitmentSha256":"2fb2fe688132b5c5eb18f1078eb8e4d24ff67ad57d53d8ac82b52b5eec22ef2c","researchDateReported":"2026-08-20","responseCommitmentSha256":"e37126adf66fe1f854dfbc1decf35ba92248f17ecc73dbf7bae4e2c515e758b7","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:45:19.672076+00","evidence":{"better_alternative_when":["The staircase is curved, has intermediate landings, or requires a curved-rail lift","The buyer needs a published minimum stair width or swivel specification before contacting dealers","A slightly larger folded profile is acceptable but greater feature transparency or bundled pricing is preferred","A folding rail is mandatory and the buyer wants a vendor with clearly published U.S. installation terms"],"citations":[{"citation_id":"C1","claim_supported":"Savaria's official K2 page states the stairlift has a slim folded profile of 10.75 inches with the L seat and 11.13 inches with the V seat, is suitable for narrow staircases, and lists a flip-up rail option with reduced capacity.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift | Best-Selling for Seniors - Savaria","url":"https://www.savaria.com/stairlifts/products/straight-k2"},{"citation_id":"C2","claim_supported":"Savaria's product page lists the K2 as a straight stairlift with L and V seats, a folded width of 10.75 inches for the L seat and 11.13 inches for the V seat, and an incline range of 30 to 55 degrees.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Stairlift - Savaria","url":"https://www.savaria.com/products/k2-straight-stairlift?lang=en"},{"citation_id":"C3","claim_supported":"Savaria's straight stairlifts page identifies the K2 as residential only, with a slim folded profile and outdoor package availability in mild climates.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Straight Stairlifts","url":"https://www.savaria.com/straight-stairlifts"},{"citation_id":"C4","claim_supported":"A U.S. dealer page provides a public example price for the K2 and indicates the brand is sold through dealer quote-style channels rather than standardized public MSRP.","source_domain":"101mobility.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"Savaria K2: Compact and Powerful Straight Stairlift - 101 Mobility","url":"https://www.101mobility.com/products/savaria-k2/"},{"citation_id":"C5","claim_supported":"A U.S. dealer listing shows add-on pricing for manual and power folding rail options, power folding footrest, and power swivel seat, which are relevant to narrow stairs and traffic-path landings.","source_domain":"thealbanyliftcompany.com","source_ownership":"independent","source_type":"directory","support_strength":"partial","title":"K2 Savaria Indoor Straight Stairlift - Albany Lift Company","url":"https://thealbanyliftcompany.com/products/k2-straight-stairlift-from-savaria-14-5-standard-track"},{"citation_id":"C6","claim_supported":"A third-party UK review page mentions a swivel radius and compact footprint for the K2, but this is not U.S.-official corroboration and should be treated as unverified for this assessment.","source_domain":"platformliftuk.co.uk","source_ownership":"independent","source_type":"review","support_strength":"inferred","title":"Savaria K2 Stairlift: UK Review, Specifications and Costs - Platform Lift","url":"https://www.platformliftuk.co.uk/articles/savaria-k2-stairlift-uk"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"Savaria K2 Straight Stairlift with L Seat or optional V Seat; optional flip-up rail / folding rail variants for traffic-path landings"},"factual_conflicts_or_uncertainty":["The official Savaria pages in the retrieved results support the slim folded profile and seat options, but do not clearly publish a minimum staircase width requirement.","Swivel radius information is present in one non-U.S. review source but not corroborated on the official U.S. product page, so it should be treated as unverified.","Pricing is inconsistent across dealer pages and not clearly published by Savaria for the U.S. market.","Some third-party pages show different capacities or add-on packages; dealer quotes should be treated as the source of truth."],"final_verdict":"Strong fit for homeowners with narrow straight stairways who need a compact stairlift that folds tightly and may need a folding rail to keep the landing clear; less suitable if the staircase is curved or if precise width and swivel specs must be verified up front.","fit_assessment":{"best_considered_for":["Homeowners with straight narrow stairways who need the lift to fold tightly against the wall","Buyers who want a compact stairlift with a slim folded profile and a choice of L or V seat","Homes where the lower landing is a traffic path and a folding rail may be needed"],"direct_answer":"Savaria K2 is a strong fit for compact, narrow straight stairways because it is explicitly designed for narrow stairs, folds to a very slim profile, and offers seat options and a folding-rail option that can help preserve foot traffic space at the landing. The main caveat is that it is for straight stairs, not curved stairs, and final suitability still depends on the actual stair width and landing clearance.","fit_rating":"strong","probably_not_best_for":["Curved or multi-landing staircases","Stairways where even a folded profile near 11 inches would still block passage","Buyers needing publicly verified U.S. MSRP and turnkey terms before dealer quote"]},"limitations_for_this_use_case":["Only suitable for straight stairs","Published manufacturer data does not clearly verify minimum staircase width in inches","Swivel radius and exact landing-clearance requirements are unclear from the checked sources","Installed price is not publicly standardized on the official site","The folded profile may still be too intrusive for exceptionally narrow or awkward stair geometry"],"platform_name":"perplexity","pricing_and_terms":{"additional_fees":["Possible dealer installation charges","Possible rail-length, bracket, or landing-modification charges","Possible electrical outlet installation fees","Optional upgrades such as power folding rail, power footrest, or swivel controls"],"contract_or_cancellation_terms":["Unclear from the retrieved sources; dealer-specific quote, deposit, warranty, and cancellation terms should be verified before purchase."],"known_costs":["Dealer page lists the K2 at $3,399 on one U.S. retailer site.","Another dealer listing shows add-on prices such as manual folding rail $795, power folding rail $1,295, power folding footrest $560, and power swivel seat $660.","One retailer page shows a lower promotional DIY-style listing, but that appears nonstandard and should not be treated as a normal installed market price."],"pricing_confidence":"low","pricing_summary":"Savaria's official pages in the retrieved results do not publish U.S. list pricing for the K2; third-party dealer pages show installed or retail prices that vary, suggesting quote-based dealer pricing rather than fixed public MSRP."},"questions_to_verify_before_buying":["What is the minimum clear stair width required for this specific installation?","Will the L seat or V seat fit best on this staircase once folded?","Does the lower landing need a manual or powered folding rail to preserve traffic flow?","What is the exact folded depth and fold-out clearance at the narrowest point on this staircase?","What is the swivel radius or turning clearance at the top landing?","What are the installed price, warranty term, service plan, and cancellation/deposit rules?","Does the stair angle reduce capacity to 300 lb for this home?","Are any electrical or landing-modification fees required?"],"research_date":"2026-08-20","strengths_for_this_use_case":["Explicitly marketed for narrow staircases","Very slim folded profile from the wall","Choice of seat styles with the tighter L seat option","Optional folding rail can help preserve landing passage space","Residential straight-stair format matches common narrow-house stair layouts"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Narrow staircase suitability","finding":"Savaria describes the K2 as compact and specifically suitable for narrow staircases; the folded profile is 10.75 inches with the L seat and 11.13 inches with the optional V seat."},{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Folded profile / foot traffic clearance","finding":"The K2's folded width is among the slimmest published by the manufacturer, which should help leave more usable stair width when not in use, but whether it avoids blocking foot traffic on a sub-30-inch stairway depends on the actual staircase geometry."},{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Seat options","finding":"Savaria publishes L seat and optional V seat configurations; the L seat has the tighter folded profile, while the V seat is slightly wider when folded."},{"assessment":"neutral","citation_ids":["C1","C2"],"factor":"Weight capacity / incline range","finding":"Savaria lists 350 lb standard capacity, with a reduced 300 lb capacity when the flip-up rail option is used or when stair angle is greater than 45 degrees; the incline range is 30 to 55 degrees."},{"assessment":"advantage","citation_ids":["C1","C5"],"factor":"Folding rail for traffic-path landing","finding":"A dealer listing shows manual and power folding rail options for the K2, which is relevant when the lower landing is part of a walkway; Savaria's own pages also note a flip-up rail option."},{"assessment":"unclear","citation_ids":["C1","C2","C5"],"factor":"Swivel radius","finding":"A reliable U.S. manufacturer source in the retrieved results did not publish a clear swivel radius for the K2; this remains unclear from the checked sources."},{"assessment":"limitation","citation_ids":["C2"],"factor":"Installation / use case scope","finding":"The K2 is a straight stairlift for residential use and is not presented as a curved-stair solution."}]},"platform":"perplexity","promptCommitmentSha256":"06c273e33c0ab8c4e00ae3b61df4b70b2f0e42185b2f0433125a925ea0615c13","researchDateReported":"2026-08-20","responseCommitmentSha256":"b96ade1174235820be27e4c9e4281374925d20d03cccaa9413eef2a13417f54d","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:45:48.35791+00","evidence":{"better_alternative_when":["Staircase is curved or spiral: Otolift Modul-Air Smart or Flow X with ASL technology","Staircase narrower than ~26 inches: Otolift Modul-Air Smart (claims 70cm/27.5\" minimum) or Flow X (610mm/24\" minimum)","Standing/perch seating preferred: Stannah Sadler or Extrema SLIM X","Wheelchair platform needed: Lehner Omega or similar platform lift","Absolute narrowest folded profile needed: Harmar SL600 Pinnacle (10.5\" vs. 10.75\")"],"citations":[{"citation_id":"C1","claim_supported":"K2 specifications, features, folded depth, weight capacity, options, and limitations","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift | Best-Selling for Seniors - Savaria","url":"https://www.savaria.com/stairlifts/products/straight-k2"},{"citation_id":"C2","claim_supported":"Stannah Siena dimensions and features for comparison","source_domain":"stannah.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Compact Stairlift for Narrow Staircases | Siena Stairlift","url":"https://www.stannah.com/en-us/stairlifts/stannah-siena"},{"citation_id":"C3","claim_supported":"Harmar SL600 Pinnacle folded width and narrow stairlift claims","source_domain":"harmar.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"SL600 Pinnacle Premium Stairlifts – Harmar","url":"https://www.harmar.com/products/sl600/"},{"citation_id":"C4","claim_supported":"Otolift Modul-Air Smart narrow staircase capabilities and thinnest rail claim","source_domain":"otoliftstairlifts.co.uk","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Otolift Modul-Air Smart – innovative and compact stairlift","url":"https://www.otoliftstairlifts.co.uk/modul-air-smart"},{"citation_id":"C5","claim_supported":"Access Flow X narrow staircase minimum width and ASL technology","source_domain":"rightchoicemobility.com","source_ownership":"independent","source_type":"company","support_strength":"direct","title":"Access Flow X Stairlift | Narrow Staircase Stairlift – Right Choice Mobility","url":"https://www.rightchoicemobility.com/products/access-flow-x"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"K2 Straight Stairlift with L Seat or V Seat; optional manual flip-up rail"},"factual_conflicts_or_uncertainty":["Savaria does not publish explicit minimum staircase width for K2, making direct comparison to competitors' stated minimums difficult","Whether 10.75\" folded depth is sufficient for a given staircase width depends on unstated rail-to-wall dimension and user knee clearance","Pricing is entirely dealer-dependent with no MSRP anchor","The 350 lb capacity with 300 lb reduction conditions creates ambiguity for buyers needing both high capacity and flip-up rail"],"final_verdict":"The Savaria K2 is a GOOD fit for Compact & Narrow Stairways—specifically straight staircases where minimizing folded profile is the priority. Its 10.75\" folded depth with L seat is among the best in class, and the optional flip-up rail addresses a common narrow-stairway problem of lower landing obstruction. However, the lack of published minimum staircase width, straight-only limitation, and capacity reduction with flip-up rail prevent a 'strong' rating. For curved stairs or staircases under approximately 26-27 inches, alternatives like Otolift Modul-Air Smart or Access Flow X are better specified. For absolute narrowest folded profile, Harmar SL600 Pinnacle edges slightly smaller at 10.5\".","fit_assessment":{"best_considered_for":["Straight narrow staircases under 30 inches where minimal folded profile is priority","Buyers prioritizing low maintenance and battery backup","Staircases with lower landing traffic paths where flip-up rail can eliminate tripping hazard"],"direct_answer":"The Savaria K2 is a strong contender for narrow straight staircases under 30 inches, with industry-leading folded depth (10.75\" with L Seat), but it is not the absolute narrowest option available and is limited to straight stairs only.","fit_rating":"good","probably_not_best_for":["Curved or spiral staircases","Staircases narrower than approximately 26-27 inches","Buyers needing standing/perch seating","Staircases with very low headroom requiring specialized clearance"]},"limitations_for_this_use_case":["Straight stairs only—no curved or spiral capability","Weight capacity drops to 300 lb with flip-up rail or steep angles","No published minimum staircase width specification","Power features require upgrades; manual fold standard","Not suitable for standing/perch seating needs"],"platform_name":"kimi","pricing_and_terms":{"additional_fees":["Optional V seat may carry premium over L seat","Power seat swivel and power footrest are optional upgrades","Manual flip-up rail optional for lower landing clearance","Continuous charge system optional"],"contract_or_cancellation_terms":["No published contract terms; sold through local dealers","Warranty terms may vary by dealer"],"known_costs":["No published base price for K2 unit","Installation typically included through dealer network","36-month warranty against defective parts included"],"pricing_confidence":"low","pricing_summary":"No specific pricing is published by Savaria for the K2. Stairlift pricing is typically customized based on staircase length, options, and installation requirements. Industry range for straight stairlifts generally falls $3,000-$7,000+ installed, but Savaria's exact positioning is unstated."},"questions_to_verify_before_buying":["What is the exact minimum staircase width for safe K2 installation, including rail mount and user clearance?","What is the total installed price for my specific staircase length and chosen options?","Will the flip-up rail be needed, and if so, what is the resulting weight capacity for my stair angle?","What is the rail profile dimension and rail-to-wall spacing?","Is the L seat or V seat more appropriate for my body dimensions and staircase width?","What does the 36-month warranty specifically cover, and what are dealer service response commitments?","Are there any local code or permitting requirements that affect installation?"],"research_date":"2026-08-20","strengths_for_this_use_case":["Industry-leading 10.75\" folded depth with L seat—among narrowest available","350 lb weight capacity (with limitations)","Battery backup with multiple trips during outage","Optional flip-up rail solves lower landing obstruction","Low maintenance rack and pinion system","Quick installation (few hours)"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"unclear","citation_ids":["C1"],"factor":"Minimum staircase width requirement","finding":"Savaria does not publish an explicit minimum staircase width for the K2. The folded depth is 10.75\" (L Seat) or 11.25\" (V Seat), with width-adjustable armrests. Industry context suggests straight stairlifts typically need ~27-29\" for safe operation, but Savaria's exact minimum is unstated."},{"assessment":"advantage","citation_ids":["C1","C3","C5"],"factor":"Folded profile depth","finding":"The K2 folds to 10.75\" from wall with standard L seat, or 11.25\" with optional V seat. This is among the narrowest folded profiles in the industry—narrower than Stannah Siena (14.5\" straight) and comparable to Harmar SL600 Pinnacle (10.5\")."},{"assessment":"neutral","citation_ids":["C1","C4"],"factor":"Slim rail design","finding":"Savaria describes the K2 as having a 'slim profile' with rack and pinion drive. No specific rail dimension is published. The rail is not marketed as the thinnest available—Otolift Modul-Air Smart claims 'thinnest single rail in the world' at unspecified dimension."},{"assessment":"neutral","citation_ids":["C1"],"factor":"Folding footrest and armrest clearance","finding":"Seat, footrest, and arms all fold up. Power footrest is optional. Manual operation is standard. This is standard for compact stairlifts but not a differentiating advantage."},{"assessment":"neutral","citation_ids":["C1"],"factor":"Swivel radius","finding":"Seat swivels and locks for safe deboarding at top landing. No specific swivel angle or radius is published. This is standard safety feature, not unique to narrow-stair applications."},{"assessment":"limitation","citation_ids":["C1"],"factor":"Weight capacity vs. narrow design tradeoff","finding":"350 lb capacity (300 lb with flip-up rail or stair angle >45°). This is robust for a compact unit—higher than some competitors. However, the 300 lb reduction with flip-up rail is notable for buyers needing both maximum capacity and landing clearance."},{"assessment":"limitation","citation_ids":["C1"],"factor":"Staircase type limitation","finding":"K2 is strictly for straight staircases. Savaria offers other models for curved stairs, but K2 itself cannot accommodate turns, curves, or intermediate landings. This is a hard exclusion for non-straight staircases."},{"assessment":"advantage","citation_ids":["C1"],"factor":"Powered options and battery backup","finding":"Battery powered with built-in charging at top and bottom; provides several trips during power failure. Optional power seat swivel and power footrest available. Continuous charge system optional for charging along entire rail length."}]},"platform":"kimi","promptCommitmentSha256":"cfdb631d274421f3e01aa3877a6299350bcb82995725d077f86e4f1f4b612de9","researchDateReported":"2026-08-20","responseCommitmentSha256":"06f3d8f5d3635e320e3311965cb059cab6efc48a9e5e60d6242ffd92399d0ae1","stage":"fit_assessment","status":"valid"},{"completedAt":"2026-08-20 06:45:42.759989+00","evidence":{"better_alternative_when":["The staircase has curves, intermediate landings, or multiple levels (requires a curved model like the Savaria Stairfriend)","The user weighs between 350 lbs and 400 lbs (requires the heavy-duty Savaria K2 Plus)","A completely hidden gear rack is preferred for aesthetics or easier maintenance (such as the Handicare 1100)"],"citations":[{"citation_id":"C1","claim_supported":"Staircase width compatibility and tight staircases under 30 inches.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Straight Stairlifts - Silver Cross Stores","url":"https://savaria.com/"},{"citation_id":"C2","claim_supported":"Weight capacity restrictions (350 lbs standard, 300 lbs on steep inclines or with folding rail).","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"K2 Straight Stairlift | Best-Selling for Seniors - Savaria","url":"https://savaria.com/"},{"citation_id":"C3","claim_supported":"Folded depth of 10.75 inches for L seat and 11.25 to 12 inches for V seat.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Compare Savaria Straight and Curved Stairlifts","url":"https://savaria.com/"},{"citation_id":"C4","claim_supported":"Manual flip-up rail details, continuous charge system, and optional power swivel seat.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"savaria K2 Straight Stairlift Owner's Manual","url":"https://savaria.com/"},{"citation_id":"C5","claim_supported":"Ultra slim folded footprint and 10.75-inch dimensions.","source_domain":"savaria.com","source_ownership":"owned","source_type":"company","support_strength":"direct","title":"Savaria K2 Stairlift - Lifeway Mobility","url":"https://savaria.com/"}],"entity":{"canonical_name":"Savaria K2","entity_type":"company","official_website":"https://savaria.com/","relevant_product_or_plan":"Savaria K2 Straight Stairlift with L Seat or V Seat"},"factual_conflicts_or_uncertainty":["Some dealer brochures list the folded depth of the V seat option as 11.25 inches, whereas the owner's manual states it is 12 inches (30 cm).","Official marketing materials claim the K2 is the single thinnest folded stairlift on the market, though some competitors (like Stannah and Handicare) offer similarly slim footprints of 11 inches or less."],"final_verdict":"The Savaria K2 is an exceptional choice for straight, narrow stairways under 30 inches. Its 10.75-inch folded profile and optional manual folding rail efficiently preserve staircase foot traffic space. Buyers should verify their personal seated dimensions with a dealer to ensure comfortable knee clearance during travel on ultra-tight stairwells.","fit_assessment":{"best_considered_for":["Staircases as narrow as 27.25 to 30 inches wide","Homes needing to preserve maximum stairway walking space for other residents","Straight-run staircases with limited lower landing clearance where a flip-up rail is required"],"direct_answer":"The Savaria K2 is a strong fit for compact and narrow stairways because it features an industry-leading folded depth of only 10.75 inches (with the standard L seat), making it one of the slimmest stairlifts available on the market.","fit_rating":"strong","probably_not_best_for":["Staircases with intermediate landings, turns, or curves","Users requiring a high-weight capacity over 350 lbs on standard straight inclines","Unassisted wheelchair-to-stairlift transfers without a secondary wheelchair at the top landing"]},"limitations_for_this_use_case":["Weight capacity is reduced from 350 lbs to 300 lbs on stair angles exceeding 45 degrees or when a flip-up rail is installed","Continuous charging along the rail is not standard (it charges at the top/bottom parking stations only, unless upgraded to the continuous charge system)","Standard unit requires manual swivel at landings unless upgraded to power options"],"platform_name":"google","pricing_and_terms":{"additional_fees":["Custom rail cutting and extension brackets","Flip-up/folding rail option","Power seat swivel and power folding footrest options","Concrete or tile installation surcharges (~$95)","After-hours installation (~$150)","Removal and disposal of an existing stairlift (~$75)"],"contract_or_cancellation_terms":["Savaria provides a 36-month manufacturer's warranty on parts.","Labor warranties and cancellation terms are determined independently by local authorized dealers (e.g., 101 Mobility provides a 1-year limited service warranty)."],"known_costs":["Base price (no installation): ~$2,750","Fully installed pricing: ~$3,299 to $3,499"],"pricing_confidence":"moderate","pricing_summary":"Savaria sells exclusively through authorized dealers, meaning retail prices vary by region, dealer, and installation complexity. Uninstalled retail units start around $2,750, with fully installed packages typically ranging from $3,299 to $3,999."},"questions_to_verify_before_buying":["Will my exact knee-to-back seated measurement allow for enough clearance from the opposite wall during transit on my narrow staircase?","Is the labor cost and local delivery fully included in the dealer's quote, and what local warranty coverage do they offer?","Does my local building code require additional running clearance beyond the physical dimensions of the folded stairlift?"],"research_date":"2026-08-20","strengths_for_this_use_case":["Ultra-slim 10.75-inch folded profile is among the smallest on the market","Comfortable, width-adjustable armrests that adjust up to 20 inches wide","Fits stairways under 30 inches wide, keeping stairs clear for foot traffic","Quiet rack-and-pinion drive provides a smooth, reliable ride"],"topic":"Best Stairlifts for Narrow Staircases","use_case_findings":[{"assessment":"advantage","citation_ids":["C1","C2"],"factor":"Minimum Staircase Width Requirement","finding":"The Savaria K2 is designed to accommodate narrow straight stairways, with dealers indicating it can fit staircases measuring down to 27.25 inches to 30 inches in width."},{"assessment":"advantage","citation_ids":["C3","C4","C5"],"factor":"Folded Profile Depth","finding":"The K2 features an exceptionally ultra-slim folded profile. When the seat, armrests, and footrest are folded up, it measures just 10.75 inches (27.3 cm) deep with the standard L seat, or 11.25 inches to 12 inches deep with the optional V seat."},{"assessment":"advantage","citation_ids":["C3","C5"],"factor":"Fold-out Width (Operating Depth)","finding":"When completely unfolded and ready for use, the standard L seat has an operating width of 20.5 inches (52 cm) to 21.5 inches (54.6 cm), while the V seat measures 22 inches (56 cm). This maximizes clearance on narrow stairways during transit."},{"assessment":"neutral","citation_ids":["C2","C4"],"factor":"Bottom Landing Clearances & Folding Rail","finding":"To prevent the lower rail from protruding into high-traffic hallways or blocking doors, the Savaria K2 offers a manual flip-up (or folding) rail option. However, utilizing a flip-up rail reduces the unit's maximum weight capacity from 350 lbs to 300 lbs."}]},"platform":"google","promptCommitmentSha256":"03b5f0aad6b616d3366df04885efa8c9f5401513d5be57987f23cdf030aa12d5","researchDateReported":"2026-08-20","responseCommitmentSha256":"8f7bab0eaa11b53b841074ce5286e85ccc00d79d06239a1e5a2452349942145a","stage":"fit_assessment","status":"valid"}],"platforms":[{"name":"openai","order":1},{"name":"anthropic","order":2},{"name":"deepseek","order":3},{"name":"grok","order":4},{"name":"perplexity","order":5},{"name":"kimi","order":6},{"name":"google","order":7}],"rankingResponses":[{"completedAt":"2026-08-12 05:27:04.173199+00","evidence":{"methodology_note":"One response to one standardized ranking prompt.","platform_name":"Independent AI Consensus Index","recommendations":[{"canonical_name":"Savaria K2","citations":[{"source_domain":"savaria.com","source_type":"company","title":"K2 Straight Stairlift","url":"https://www.savaria.com/stairlifts/products/straight-k2?lang=en"},{"source_domain":"savaria.com","source_type":"company","title":"Savaria K2 Stairlift Brochure","url":"https://files.savaria.com/wp-content/uploads/2026/01/K2%20Straight%20Stairlift%20Brochure.pdf"},{"source_domain":"savaria.com","source_type":"company","title":"K2 Stairlift Owner's Manual","url":"https://files.savaria.com/wp-content/uploads/2026/01/K2%20Straight%20Stairlift%20Owner%27s%20Manual.pdf"}],"confidence":"high","important_limitations":["Designed for straight-run stairs; it is not the choice for turns or intermediate landings","The manufacturer does not publish a single minimum staircase width for every installation; dealer measurement is required","Power features and folding rail increase cost","The standard warranty is 36 months, shorter than some competing dealer-backed warranties"],"official_website":"https://www.savaria.com/stairlifts/products/straight-k2?lang=en","pricing_summary":"Quote-only in the United States. Public pricing was not identified; price varies by stair length, installation, seat, rail, and power options.","rank":1,"recommended_product_or_plan":"Savaria K2 straight stairlift with L seat; add manual or powered folding rail if the lower landing is a traffic path","strongest_use_case_features":["10.75-inch folded depth with the L seat","Seat, armrests, and footrest fold upward","Width-adjustable armrests and two seat styles","Optional power seat swivel and power folding footrest","Optional folding rail can reduce obstruction at a doorway or busy lower landing","350-pound capacity on standard configurations up to 45 degrees; 300 pounds with certain rail options or steeper stairs"],"why_it_fits":"The strongest documented fit for a very narrow, straight U.S. staircase because its standard L-seat configuration folds to approximately 10.75 inches from the wall. Savaria lists U.S. dealer availability and the model is specifically positioned for narrow stairs."},{"canonical_name":"Stannah Sadler","citations":[{"source_domain":"stannah.com","source_type":"company","title":"The Sadler Compact Standing Stair Lift","url":"https://www.stannah.com/en-us/stairlifts/sadler-chair"},{"source_domain":"stannah.com","source_type":"company","title":"Stairlift Dimensions","url":"https://www.stannah.com/en-us/resources/stairlift-dimensions"}],"confidence":"high","important_limitations":["Standing/semi-standing operation is not appropriate for every user, especially people needing substantial trunk, balance, or transfer support","Published dimensions do not establish that every sub-28-inch staircase will pass a U.S. site survey","The product page does not provide a public purchase price","Footrest, armrest, and swivel-clearance measurements for every configuration are not fully disclosed"],"official_website":"https://www.stannah.com/en-us/stairlifts/sadler-chair","pricing_summary":"Quote-only; Stannah provides a U.S. home assessment rather than public list pricing. Curved installations are expected to cost more than straight installations.","rank":2,"recommended_product_or_plan":"Stannah Sadler standing/semi-standing stairlift","strongest_use_case_features":["Published minimum staircase width of 26 to 28 inches","18.5-inch width inside the armrests","16-inch folded depth from the wall","Compact standing/semi-standing posture can improve knee and foot clearance","Seat and arms fold when parked","Suitable for indoor curved and very narrow staircases"],"why_it_fits":"Among the clearest published fits for stairs under 30 inches. Stannah lists a 26- to 28-inch minimum staircase width and an 18.5-inch inside-armrest width, making it particularly relevant where a conventional seated chair is too bulky."},{"canonical_name":"Stannah Siena 600","citations":[{"source_domain":"stannah.com","source_type":"company","title":"Stannah Siena Stairlift","url":"https://www.stannah.com/en-us/stairlifts/stannah-siena"},{"source_domain":"stannah.com","source_type":"company","title":"Stairlift Dimensions","url":"https://www.stannah.com/en-us/resources/stairlift-dimensions"}],"confidence":"high","important_limitations":["It is not a reliable match for stairs materially narrower than 28 inches","The 20.5-inch chair width plus rail and installation clearances can leave limited walking space","The published page does not specify a single swivel radius","Pricing is not public"],"official_website":"https://www.stannah.com/en-us/stairlifts/stannah-siena","pricing_summary":"Quote-only through Stannah U.S. assessment. Final cost depends on straight versus curved rail, stair length, installation, and selected options.","rank":3,"recommended_product_or_plan":"Stannah Siena 600 straight stairlift","strongest_use_case_features":["Published minimum staircase width of 28 to 30 inches","14.5-inch folded depth from the wall on straight stairs","20.5-inch inside-armrest width","Foldable seat and armrests","Swivel-seat design intended to assist top-landing transfers","Available for straight and curved layouts"],"why_it_fits":"A strong conventional seated option when the staircase is approximately 28 to 30 inches wide. Its 14.5-inch folded depth is better than many standard chairs, while the straight configuration minimizes rail complexity."},{"canonical_name":"Acorn 130","citations":[{"source_domain":"acornstairlifts.com","source_type":"company","title":"How Wide Do Stairs Need to Be For a Stairlift?","url":"https://www.acornstairlifts.com/faqs/how-wide-do-stairs-need-to-be-for-a-stairlift"},{"source_domain":"acornstairlifts.com","source_type":"company","title":"Acorn Stairlift FAQ","url":"https://acornstairlifts.com/about/acorn-stairlifts-faq"}],"confidence":"moderate","important_limitations":["Acorn's 26-inch figure is a general fit guideline, not a guarantee for every staircase geometry","The manufacturer does not clearly publish a model-specific folded profile depth in the cited U.S. material","The 130 is less suitable than compact standing or ultra-slim designs where walking clearance is the overriding concern","Public pricing is not provided"],"official_website":"https://www.acornstairlifts.com/","pricing_summary":"Quote-only after a home survey. Acorn states that price depends on staircase configuration and personal requirements.","rank":4,"recommended_product_or_plan":"Acorn 130 straight stairlift with optional folding rail where required","strongest_use_case_features":["Published 26-inch minimum staircase requirement","Straight-stair configuration","Seat, arms, and footrest fold when not in use","Optional folding rail can help preserve lower-landing foot traffic","Acorn offers U.S. home surveys and installation"],"why_it_fits":"Acorn explicitly states that the 130 needs approximately 26 inches of staircase width for the user to swivel comfortably, placing it among the few mainstream U.S.-available models with a published sub-28-inch fit claim."},{"canonical_name":"Bruno Elan","citations":[{"source_domain":"bruno.com","source_type":"company","title":"Bruno Stair Lifts","url":"https://www.bruno.com/stair-lifts"},{"source_domain":"bruno.com","source_type":"company","title":"Stair Lift Basics","url":"https://www.bruno.com/stair-lifts/basics"},{"source_domain":"lifewaymobility.com","source_type":"directory","title":"Compare Best Stair Lifts of 2026","url":"https://www.lifewaymobility.com/utah/resources/product-guides/stair-lift-comparison-chart/"}],"confidence":"moderate","important_limitations":["Bruno does not publish a definitive minimum staircase width for the Elan on the cited product pages","A Lifeway comparison lists a 12-inch folded width and 5-inch rail-to-wall distance, but exact installed clearance varies by configuration","The 20.25-inch armrest spacing may be restrictive for some users","Public pricing is not provided"],"official_website":"https://www.bruno.com/stair-lifts","pricing_summary":"Dealer quote required. Bruno states that cost varies with configuration, options, and installation; a folding rail and power footrest add cost.","rank":5,"recommended_product_or_plan":"Bruno Elan straight indoor stair lift with power folding footrest and, where needed, folding rail","strongest_use_case_features":["Narrow vertical rail designed to leave more open space on the steps","Manual folding seat, arms, and footrest","Optional power folding footrest","Optional folding rail for lower-landing hallways or doorways","300-pound capacity","Made in the United States and sold through local dealers"],"why_it_fits":"A good U.S.-supported option when a narrow vertical rail and local installation network matter more than a published ultra-low minimum width. Bruno says the Elan uses a narrow vertical rail positioned close to the wall to preserve open stair space."},{"canonical_name":"Handicare 1100","citations":[{"source_domain":"savaria.com","source_type":"company","title":"Compare Savaria Straight and Curved Stairlifts","url":"https://www.savaria.com/stairlifts/compare"},{"source_domain":"lifewaymobility.com","source_type":"directory","title":"Compare Best Stair Lifts of 2026","url":"https://www.lifewaymobility.com/utah/resources/product-guides/stair-lift-comparison-chart/"},{"source_domain":"savaria.com","source_type":"company","title":"Straight Stairlift Technical Drawings","url":"https://www.savaria.com/drawings/stairlifts?lang=en"}],"confidence":"moderate","important_limitations":["The cited sources do not establish a reliable minimum staircase width under 30 inches","The 1100's 310-pound standard capacity is lower than the Savaria K2's maximum standard capacity","Exact armrest, footrest, and swivel-clearance dimensions are configuration-dependent","Pricing is quote-only"],"official_website":"https://www.savaria.com/stairlifts/compare","pricing_summary":"Quote-only through a local Savaria dealer. Public pricing was not identified.","rank":6,"recommended_product_or_plan":"Handicare 1100 straight stairlift supplied through Savaria-authorized U.S. dealers","strongest_use_case_features":["12.75-inch published folded depth","Power seat swivel and folding footrest options","Friction-drive system with no exposed gear rack","Designed for straight stairways","Available through the Savaria dealer network in the United States"],"why_it_fits":"A reasonable narrow-stair alternative for buyers who value a compact folded profile and powered options. Savaria's comparison lists a 12.75-inch folded depth, while U.S. dealer comparison data identifies power swivel and folding-footrest options."},{"canonical_name":"Handicare Freecurve","citations":[{"source_domain":"savaria.com","source_type":"company","title":"Handicare Freecurve Curved Stairlift","url":"https://www.savaria.com/stairlifts/products/handicare-freecurve-stairlift"},{"source_domain":"savaria.com","source_type":"company","title":"Compare Savaria Straight and Curved Stairlifts","url":"https://www.savaria.com/stairlifts/compare"}],"confidence":"moderate","important_limitations":["No dependable universal minimum staircase width or folded depth is published for all configurations","Custom curved installations are substantially more expensive than straight lifts","The standard capacity is listed at 275 pounds","The fit depends heavily on landings, curvature, parking position, and transfer space"],"official_website":"https://www.savaria.com/stairlifts/products/handicare-freecurve-stairlift","pricing_summary":"Custom quote only. Savaria states that the rail is measured and fabricated for the individual staircase; public pricing was not identified.","rank":7,"recommended_product_or_plan":"Handicare Freecurve custom curved stairlift with optional two-way power swivel","strongest_use_case_features":["Custom-fabricated rail for curved, turning, or spiral-style stairs","Single-tube rail design","Optional two-way powered pivot swivel for narrow stairs and tight spirals","Seat, arms, and footrest fold when parked","Optional active seat for easier transfers"],"why_it_fits":"The best curved-stair option in this group when tight turns or a spiral-like layout make a straight lift impossible. Its single-tube rail follows the stair shape, and the optional two-way power swivel is specifically intended to save space on narrow or tight staircases."}],"research_date":"2026-08-12","topic":"Best Stairlifts for Narrow Staircases"},"platform":"openai","promptCommitmentSha256":"ee445ac7a1a5474f8acaf03777bfb2924e44c6d742ca739b6d762d3dea37abb3","researchDateReported":"2026-08-12","responseCommitmentSha256":"39053407af88eca6de66236842802452c6216473b4fbc80eb015b5e63a58ee17","stage":"ranking_discovery","status":"valid"},{"completedAt":"2026-08-12 05:27:31.132461+00","evidence":{"methodology_note":"One response to one standardized ranking prompt.","platform_name":"AI Consensus Index","recommendations":[{"canonical_name":"Otolift Modul-Air Smart","citations":[{"source_domain":"corporate.otolift.com","source_type":"company","title":"Otolift Modul-Air Smart - the most advanced stairlift from Otolift","url":"https://corporate.otolift.com/modul-air-smart"},{"source_domain":"us.otolift.com","source_type":"company","title":"Otolift USA - Reliable stairlift solutions","url":"https://us.otolift.com/"},{"source_domain":"harmar.com","source_type":"company","title":"Otolift Modul-Air Smart Curved Stairlift – Harmar","url":"https://www.harmar.com/products/otolift-modul-air-smart-curved-stairlift/"}],"confidence":"high","important_limitations":["Higher premium pricing due to specialized narrow-stair engineering","Requires professional measurement and installation via Harmar dealers","Weight capacity of 275 lbs is lower than standard models","Limited aesthetic customization compared to mainstream models"],"official_website":"https://corporate.otolift.com/modul-air-smart","pricing_summary":"Premium pricing not disclosed in search results; requires dealer quote. Positioned as high-end solution for extremely narrow staircases.","rank":1,"recommended_product_or_plan":"Otolift Modul-Air Smart (Straight or Curved)","strongest_use_case_features":["World's thinnest single rail at 60 mm diameter enables installation on staircases as narrow as 60 cm (23.6 inches)","Reverse Drive Technology allows backwards seat rotation to navigate tight spaces under 30 inches","Modular rail system with quick delivery and no factory customization delays","Foldable armrest and footrest for additional space when parked","Compatible with straight, curved, spiral, and helical stairs","5-year full warranty standard with 24/7 service team"],"why_it_fits":"Specifically engineered for extreme narrow staircases, fitting widths from 60 cm (23.6 inches) using the world's thinnest rail. Reverse Drive Technology allows the chair to travel backwards on tight curves, minimizing knee clearance needs. Custom-built modular design reduces delivery times compared to traditional curved lifts. Available through Harmar in the US."},{"canonical_name":"Handicare 1100","citations":[{"source_domain":"handicare-stairlifts.com","source_type":"company","title":"Handicare 1100 stairlift | Handicare Stairlifts International","url":"https://handicare-stairlifts.com/stairlifts/straight-stairlifts/1100/"},{"source_domain":"savaria.com","source_type":"company","title":"Handicare 1100 Straight Stairlift | Advanced Mobility - Savaria","url":"https://www.savaria.com/stairlifts/products/straight-handicare-1100"},{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts for Narrow Staircases of 2026 (with Reviews & Cost)","url":"https://www.retirementliving.com/stair-lifts/stairlifts-for-narrow-staircases"}],"confidence":"high","important_limitations":["Designed for straight staircases only; not suitable for curved stairs","Minimum staircase width not explicitly specified, but industry standard is 26-28 inches","Requires professional installation; not DIY-installable","Premium pricing due to advanced friction drive technology"],"official_website":"https://handicare-stairlifts.com/stairlifts/straight-stairlifts/1100/","pricing_summary":"Pricing varies by dealer; available through 101 Mobility, Savaria distributors, and independent installers. Typical premium positioning with optional powered features (swivel, footrest) adding $650 each.","rank":2,"recommended_product_or_plan":"Handicare 1100 Straight Stairlift","strongest_use_case_features":["Narrowest straight stairlift rail design on market reduces obstruction","Folded profile depth of 12.6 inches keeps stairs accessible when parked","Patented friction drive eliminates gear rack for fully enclosed, clean design","Slim track projects only 6.3 inches into staircase width","Swivel seat at top landing with fold-up arms and footrest","Weight capacity 280-309 lbs depending on stair angle","Lifetime warranty on motor/gearbox; 24-month parts warranty"],"why_it_fits":"Marketed as the slimmest straight stairlift rail on the market with ultra-compact folded depth of 12.6 inches. Patented four-motor friction drive eliminates gear rack, allowing slim line rail design. Folds completely for maximum staircase accessibility. Widely available across US through multiple distributors."},{"canonical_name":"Savaria K2","citations":[{"source_domain":"savaria.com","source_type":"company","title":"K2 Straight Stairlift | Best-Selling for Seniors - Savaria","url":"https://www.savaria.com/stairlifts/products/straight-k2"},{"source_domain":"koltaccess.com","source_type":"company","title":"Savaria K2 Stairlift - Kolt Access & Lift","url":"https://koltaccess.com/files/2019/11/K2_2-page_brochure_web(1).pdf"}],"confidence":"high","important_limitations":["Straight staircases only; not suitable for curved stairs","Minimum staircase width specifications not explicitly provided but aligned with 28-30 inch standard","Lower weight capacity and durability claims compared to premium curved stairlift options","Not available in Quebec per manufacturer"],"official_website":"https://www.savaria.com/stairlifts/products/straight-k2","pricing_summary":"Competitively positioned in mid-range; exact pricing not disclosed in search results. Known for value pricing relative to compact profile and features.","rank":3,"recommended_product_or_plan":"Savaria K2 Straight Stairlift","strongest_use_case_features":["Industry-leading folded depth of 10.75 inches - smallest profile on market","Slim rail design sits close to wall, maximizing staircase width availability","Battery-powered with continuous charging strips at both ends of track","Operates during power outages with built-in battery","Weight capacity 350 lbs","Swivel seat at top landing for safe exit/entry","LED status lights and obstacle sensors","Quick installation in just a few hours"],"why_it_fits":"Ultra-slim folded profile of 10.75 inches is among the smallest on market, designed specifically for narrow staircases. Slim rail design hugs the staircase. Battery-powered with built-in charging at top and bottom eliminates wall outlets. Fast installation and competitively priced for compact feature set."},{"canonical_name":"Bruno Elan","citations":[{"source_domain":"ofzenandcomputing.com","source_type":"review","title":"10 Best Stair Lifts for Narrow Staircases (June 2026) Top Picks","url":"https://www.ofzenandcomputing.com/best-stair-lifts-for-narrow-staircases/"},{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts for Narrow Staircases of 2026 (with Reviews & Cost)","url":"https://www.retirementliving.com/stair-lifts/stairlifts-for-narrow-staircases"},{"source_domain":"homelift.com","source_type":"company","title":"Best Stairlift for Small Spaces | Blog | HomeLift Mobility Solutions","url":"https://www.homelift.com/best-stairlifts-for-small-spaces/"}],"confidence":"high","important_limitations":["Designed for straight staircases only","Requires 28-30 inches minimum width; not suitable for staircases under 28 inches","DIY installation may void warranty or result in safety issues without professional measurement","No power-folding options on base model; premium features add cost"],"official_website":"https://www.bruno.com/","pricing_summary":"Mid-range pricing; widely available and competitively priced. Typically lower cost than specialized narrow models like Handicare 1100 or Otolift.","rank":4,"recommended_product_or_plan":"Bruno Elan Straight Stairlift","strongest_use_case_features":["Folded dimensions of 12 inches fit almost any narrow staircase","23-inch open projection minimizes obstruction while in use","Low-profile rail design leaves space on stairs","350 lb weight capacity suitable for most users","DIY-installable option for cost-conscious homeowners","Manual folding seat, footrest, and arms","Lifetime warranty on rail; 2-year warranty on parts and labor","Wide dealer network across US"],"why_it_fits":"DIY-installable straight stairlift with 12-inch folded profile and 23-inch open projection. Low-profile rail design leaves open space on stairs. 350 lb weight capacity. Widely available through dealers nationwide. Suitable for straightforward straight-staircase installations in homes under 30-inch width."},{"canonical_name":"AmeriGlide Rave 2","citations":[{"source_domain":"amazon.com","source_type":"other","title":"Amazon.com: AmeriGlide Rave 2 Stair Lift for Seniors","url":"https://www.amazon.com/AmeriGlide-Rave-Stair-Installable-Capacity/dp/B09M1ZPBD9"},{"source_domain":"ofzenandcomputing.com","source_type":"review","title":"10 Best Stair Lifts for Narrow Staircases (June 2026) Top Picks","url":"https://www.ofzenandcomputing.com/best-stair-lifts-for-narrow-staircases/"},{"source_domain":"ameriglide.com","source_type":"company","title":"Folding Rail: A Smart Upgrade for Your Stair Lift - AmeriGlide Blog","url":"https://www.ameriglide.com/blog/folding-rail-a-smart-upgrade-for-your-stair-lift/"}],"confidence":"high","important_limitations":["Straight staircases only; not suitable for curved stairs","Minimum width requirement appears to be 28-30 inches standard","DIY installation requires homeowner measurement accuracy; misalignment risks safety","Less premium construction than Savaria K2 or Handicare 1100","Warranty details not clearly specified in search results"],"official_website":"https://www.ameriglide.com/","pricing_summary":"Budget to mid-range pricing due to DIY installation option; exact pricing not disclosed but positioned as affordable alternative to professional installation.","rank":5,"recommended_product_or_plan":"AmeriGlide Rave 2 Straight Stairlift","strongest_use_case_features":["Ultra-thin folded design of 11 inches preserves staircase accessibility","DIY self-installable option reduces professional installation costs","350 lb weight capacity","All-metal case construction for durability","Battery-powered operation","Optional powered folding rail upgrade ($price unspecified) for doorway obstruction issues","Made in USA","15 linear feet of track included"],"why_it_fits":"Ultra-thin design folds to just 11 inches when collapsed, among the slimmest available. DIY self-installable with 350 lb capacity. Made in USA. Battery-powered with optional powered folding rail upgrade for homes where bottom landing space is limited. Suitable for homeowners on tight budgets seeking DIY installation."},{"canonical_name":"Stannah Starla","citations":[{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts for Narrow Staircases of 2026 (with Reviews & Cost)","url":"https://www.retirementliving.com/stair-lifts/stairlifts-for-narrow-staircases"},{"source_domain":"stannah.com","source_type":"company","title":"Compact Stairlift for Narrow Staircases | Siena Stairlift","url":"https://www.stannah.com/en-us/stairlifts/stannah-siena"}],"confidence":"moderate","important_limitations":["Straight staircases only","Requires professional installation; not DIY option","Minimum width 26 inches still requires professional measurement verification","Limited information on exact folded profile dimensions in search results","Premium pricing expected from established European manufacturer"],"official_website":"https://www.stannah.com/en-us/stairlifts/stannah-siena","pricing_summary":"Premium positioning as established brand; exact pricing not disclosed in search results. Requires dealer consultation.","rank":6,"recommended_product_or_plan":"Stannah Starla Straight Stairlift","strongest_use_case_features":["Fits narrow staircases 26-30 inches wide","Slim rail design hugs staircase closely","Seat, armrests, and footrest fold up when not in use","Professional installation ensures proper fit for tight spaces","Reliable operation with backup battery for power outages","Easy-to-use retractable seat belt","Established brand with 150+ years of stairlift experience"],"why_it_fits":"Compact straight model fits narrow staircases 26-30 inches wide with slim rail and foldable design. Seat, armrests, and footrest fold when not in use, maximizing accessibility for other users. Professional installation required. Well-established manufacturer with long operational history."},{"canonical_name":"Harmar SL600 Pinnacle","citations":[{"source_domain":"californiamobility.com","source_type":"review","title":"Most Compact Stair Lifts: Best Options for Small Spaces","url":"https://californiamobility.com/what-is-the-most-compact-stairlift-available/"},{"source_domain":"harmar.com","source_type":"company","title":"Harmar Authorized Dealer Directory","url":"https://www.harmar.com/"}],"confidence":"moderate","important_limitations":["Exact minimum staircase width specifications not clearly documented in search results","Requires professional installation through authorized Harmar dealers","Limited detailed specification information available compared to competitors","Appears to be standard compact model rather than specialized ultra-narrow model"],"official_website":"https://www.harmar.com/","pricing_summary":"Mid-range to premium pricing through Harmar dealer network; exact pricing not disclosed.","rank":7,"recommended_product_or_plan":"Harmar SL600 Pinnacle Straight Stairlift","strongest_use_case_features":["One of the narrowest models available with slim rail design","Folding rail option available for tight bottom landing spaces","Compact folded profile suitable for narrow staircases","Available through extensive Harmar dealer network in US","Power options available for enhanced convenience"],"why_it_fits":"One of the narrowest models available with slim rail design and folding footrest option. Designed for narrow staircases. Available through Harmar authorized dealers nationwide. Compact footprint when folded."},{"canonical_name":"Handicare Freecurve","citations":[{"source_domain":"101mobility.com","source_type":"company","title":"Best Stairlifts for Steep Staircases & Tight Hallways | 101 Mobility","url":"https://www.101mobility.com/blog/best-stairlift-models-for-tight-allways/"},{"source_domain":"multicare.co.uk","source_type":"review","title":"Essential Stairlifts for Narrow Stairs | Multicare Mobility","url":"https://www.multicare.co.uk/blogs/stairlift-buyers-guides/stairlifts-for-narrow-stairs-practical-options-minimum-widths-costs-uk-guide-2026"}],"confidence":"moderate","important_limitations":["Curved stairlifts are more expensive than straight models","Requires professional measurement and custom rail fabrication","Longer delivery time due to custom engineering","Higher premium pricing due to curved rail complexity","Best suited for homes with actual curved stairs, not straight narrow stairs"],"official_website":"https://www.handicare.com/","pricing_summary":"Premium pricing for custom curved stairlift; exact pricing not available in search results. Requires professional quote based on custom measurements.","rank":8,"recommended_product_or_plan":"Handicare Freecurve Curved Stairlift","strongest_use_case_features":["Single-rail design is slim and unobtrusive for narrow hallways","Custom-engineered for specific staircase geometry","Designed for homes with limited parking space at bottom of stairs","Fold-up footrests save additional space when parked","Flexible design accommodates winders and tight landings","Available through Handicare network in US"],"why_it_fits":"Single-rail curved stairlift engineered for homes with very limited space at bottom of stairs. Slim design makes it an unobtrusive option for narrow hallways. Custom-engineered for exact staircase dimensions. Suitable when curved rail can better accommodate tight turning stairs."},{"canonical_name":"Bruno Elite Curved Stairlift","citations":[{"source_domain":"lifewaymobility.com","source_type":"company","title":"Compact Stair Lifts for Narrow Staircases | Lifeway Mobility","url":"https://www.lifewaymobility.com/blog/best-stair-lifts-for-narrow-stairs/"}],"confidence":"moderate","important_limitations":["Premium pricing due to custom curved engineering","Extended lead times for custom rail fabrication","Designed primarily for curved stairs; overkill for straight narrow stairs","Requires professional installation and measurement","Not suitable for DIY installation"],"official_website":"https://www.bruno.com/","pricing_summary":"Premium pricing for custom curved stairlift; exact pricing not disclosed. Budget for higher cost than straight stairlift options.","rank":9,"recommended_product_or_plan":"Bruno Elite Curved Stairlift","strongest_use_case_features":["Custom-built to exact staircase dimensions for tight fit","Rail follows staircase contours closely, preserving walkable space","Higher weight capacity (up to 400 lbs) than most narrow models","Smooth performance and strong reliability reputation","Premium engineering for complex staircases","Bruno lifetime warranty on rail"],"why_it_fits":"Premium curved stairlift custom-built to exact staircase dimensions. For narrow curved staircases, the custom rail can follow contours closely and efficiently, maintaining as much walkable space as possible. 400 lb weight capacity exceeds most narrow models. Trusted brand with strong reliability reputation."},{"canonical_name":"UP Stairlift","citations":[{"source_domain":"upstairlift.com","source_type":"company","title":"Stairlift specifications? Discover our award-winning UP Stairlift","url":"https://www.upstairlift.com/specifications/"},{"source_domain":"ofzenandcomputing.com","source_type":"review","title":"10 Best Stair Lifts for Narrow Staircases (June 2026) Top Picks","url":"https://www.ofzenandcomputing.com/best-stair-lifts-for-narrow-staircases/"}],"confidence":"moderate","important_limitations":["Lower weight capacity of 125 kg (275 lbs) compared to standard models","Availability in US appears limited compared to established brands","Less established market presence than Bruno, Handicare, Stannah","Technical specifications not fully detailed for narrow staircase performance","Professional installation required"],"official_website":"https://www.upstairlift.com/","pricing_summary":"Competitive pricing benefit from modular design (no factory customization costs). Exact pricing not disclosed in search results.","rank":10,"recommended_product_or_plan":"UP Stairlift (Straight or Curved)","strongest_use_case_features":["Modular aluminum rail fits on every staircase width without customization delay","Revolutionary space-saving profile ensures slim fit on narrow stairs","Only 2 rail parts requiring no factory customization speeds delivery","Completely reusable and 100% recyclable aluminum components","100% modular means same rail fits straight, curved, spiral stairs","Award-winning design with luxurious chair upholstery","WiFi connectivity for remote diagnostics"],"why_it_fits":"Modular aluminum rail design fits on virtually every staircase width including narrow stairs under 30 inches. Revolutionary space-saving profile and slim design. Quick delivery because modular rail requires no factory customization. Award-winning design. Available through Access BDD and other US dealers."}],"research_date":"2026-08-12","topic":"Best Stairlifts for Narrow Staircases"},"platform":"anthropic","promptCommitmentSha256":"ee445ac7a1a5474f8acaf03777bfb2924e44c6d742ca739b6d762d3dea37abb3","researchDateReported":"2026-08-12","responseCommitmentSha256":"72346876e000269bc4b633c0d48f303a5a2d0095edfdd96a1b44cb72b64f7bcf","stage":"ranking_discovery","status":"valid"},{"completedAt":"2026-08-12 05:27:41.675216+00","evidence":{"methodology_note":"One response to one standardized ranking prompt. Recommendations are based on publicly available information from manufacturer websites and general stairlift reviews. Confidence reflects the availability of specific narrow-staircase suitability data.","platform_name":"Narrow Stairlift Buyer Guide","recommendations":[{"canonical_name":"Stannah Stairlifts","citations":[{"source_domain":"stannah.com","source_type":"company","title":"Stannah Stairlifts for Narrow Stairs","url":"https://www.stannah.com/stairlifts/narrow-stairs"}],"confidence":"high","important_limitations":["Custom installation may have variable lead times","Price not publicly listed, typically $3,500-$5,000"],"official_website":"https://www.stannah.com","pricing_summary":"Not publicly listed; estimated $3,500-$5,000 installed","rank":1,"recommended_product_or_plan":"Stannah S-Class 300E","strongest_use_case_features":["Minimum stair width of 28 inches","Folding footrest and armrests for clearance","Slim, discreet rail design","Swivel seat at top for safe exit"],"why_it_fits":"The S-Class 300E is designed for narrow staircases with a slim rail profile and a folding footrest that tucks away, minimizing obstructed space. It requires only 28 inches of stair width, making it ideal for compact stairways under 30 inches."},{"canonical_name":"Bruno Stairlifts","citations":[{"source_domain":"bruno.com","source_type":"company","title":"Bruno Elan 305 Stairlift","url":"https://www.bruno.com/elan-305-stairlift"}],"confidence":"high","important_limitations":["Not as widely available in all regions","Price typically higher than some competitors"],"official_website":"https://www.bruno.com","pricing_summary":"Typically $3,500-$4,500 installed","rank":2,"recommended_product_or_plan":"Bruno Elan 305","strongest_use_case_features":["Minimum stair width of 28 inches","Folding seat, armrests, and footrest","Compact rail design","Smooth, quiet operation"],"why_it_fits":"The Bruno Elan 305 is built for tight spaces, with a minimum stair width requirement of 28 inches and a compact folding rail that reduces intrusion. Its folding footrest and armrests increase clearance for foot traffic."},{"canonical_name":"Acorn Stairlifts","citations":[{"source_domain":"acornstairlifts.com","source_type":"company","title":"Acorn 130 Superglide Specifications","url":"https://www.acornstairlifts.com/straight-stairlifts/130-superglide"}],"confidence":"high","important_limitations":["Straight-rail only, not for curved stairs","Some users report need for periodic maintenance"],"official_website":"https://www.acornstairlifts.com","pricing_summary":"Typically $3,000-$4,000 installed","rank":3,"recommended_product_or_plan":"Acorn 130 Superglide (Straight)","strongest_use_case_features":["Minimum stair width of 27 inches","Folding footrest and armrests","Slim rail design","Swivel seat for easy exit"],"why_it_fits":"The Acorn 130 Superglide is designed for narrow staircases, requiring only 27 inches of stair width. Its folding footrest and armrests collapse to a slim profile, and the rail is mounted close to the wall to preserve space."},{"canonical_name":"Harmar Stairlifts","citations":[{"source_domain":"harmar.com","source_type":"company","title":"Harmar SL600 Stairlift","url":"https://www.harmar.com/products/sl600-stairlift"}],"confidence":"moderate","important_limitations":["Limited curved rail options","May require professional installation from a dealer"],"official_website":"https://www.harmar.com","pricing_summary":"Typically $3,000-$4,000 installed","rank":4,"recommended_product_or_plan":"Harmar SL600 (Straight)","strongest_use_case_features":["Minimum stair width of 28 inches","Folding footrest and armrests","Slim rail profile","Quiet motor"],"why_it_fits":"The Harmar SL600 is a compact straight stairlift with a minimum stair width of 28 inches. It features a folding footrest and armrests that reduce the folded profile, and its rail is designed to minimize obstruction."},{"canonical_name":"AmeriGlide Stairlifts","citations":[{"source_domain":"ameriglide.com","source_type":"company","title":"AmeriGlide EZ-900 Stairlift","url":"https://www.ameriglide.com/ez-900-stairlift"}],"confidence":"moderate","important_limitations":["Less premium build quality compared to top brands","Limited customer support availability"],"official_website":"https://www.ameriglide.com","pricing_summary":"Typically $2,500-$3,500 installed","rank":5,"recommended_product_or_plan":"AmeriGlide EZ-900 (Straight)","strongest_use_case_features":["Minimum stair width of 28 inches","Folding footrest and armrests","Affordable pricing","Easy installation"],"why_it_fits":"The AmeriGlide EZ-900 is a budget-friendly option for narrow stairs, with a minimum stair width of 28 inches. Its folding footrest and armrests help clear the staircase, and the rail is designed to be slim."},{"canonical_name":"MediStair Stairlifts","citations":[{"source_domain":"medistair.com","source_type":"company","title":"MediStair Orion Stairlift","url":"https://www.medistair.com/orion-stairlift"}],"confidence":"moderate","important_limitations":["Less established in the US market","Availability may be limited to certain regions"],"official_website":"https://www.medistair.com","pricing_summary":"Typically $3,000-$4,000 installed","rank":6,"recommended_product_or_plan":"MediStair Orion (Straight)","strongest_use_case_features":["Minimum stair width of 28 inches","Folding footrest and armrests","Compact rail design","European engineering"],"why_it_fits":"The MediStair Orion is designed for narrow staircases, requiring a minimum of 28 inches of stair width. It features a folding footrest and armrests, and a slim rail to keep the walkway clear."},{"canonical_name":"Savaria Stairlifts","citations":[{"source_domain":"savaria.com","source_type":"company","title":"Savaria Vuelift Stairlift","url":"https://www.savaria.com/products/vuelift-stairlift"}],"confidence":"low","important_limitations":["Minimum stair width not specified but likely 28 inches","Higher price point"],"official_website":"https://www.savaria.com","pricing_summary":"Typically $3,500-$5,000 installed","rank":7,"recommended_product_or_plan":"Savaria Vuelift (Straight)","strongest_use_case_features":["Folding footrest and armrests","Slim rail design","Quiet operation","Durable construction"],"why_it_fits":"The Savaria Vuelift is a straight stairlift with a compact design, suitable for narrow staircases. It has a folding footrest and armrests, and the rail is mounted to minimize space usage, though minimum stair width is not aggressively advertised."}],"research_date":"2026-08-12","topic":"Best Stairlifts for Narrow Staircases"},"platform":"deepseek","promptCommitmentSha256":"ee445ac7a1a5474f8acaf03777bfb2924e44c6d742ca739b6d762d3dea37abb3","researchDateReported":"2026-08-12","responseCommitmentSha256":"40e07dc18e7ea994c7ea94f99fd507995ca3080e0dae95fdf24f68892eb73399","stage":"ranking_discovery","status":"valid"},{"completedAt":"2026-08-12 05:26:54.074938+00","evidence":{"methodology_note":"One response to one standardized ranking prompt.","platform_name":"","recommendations":[{"canonical_name":"Harmar Pinnacle Premium SL600","citations":[{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"},{"source_domain":"lifewaymobility.com","source_type":"company","title":"Compact Stair Lifts for Narrow Staircases","url":"https://www.lifewaymobility.com/blog/best-stair-lifts-for-narrow-stairs/"}],"confidence":"high","important_limitations":["Primarily for straight stairs","Requires professional measurement for exact fit"],"official_website":"https://www.harmar.com","pricing_summary":"Starting around $2,200–$4,000 installed (varies by dealer)","rank":1,"recommended_product_or_plan":"Harmar SL600 / Pinnacle Premium SL600 straight stairlift","strongest_use_case_features":["10.5-inch folded depth","Slim rail design","350 lb capacity","Helical worm gear drive for quiet operation"],"why_it_fits":"Slim rail and ultra-compact folded profile of 10.5 inches maximize clearance on stairways under 30 inches wide; available through US dealers."},{"canonical_name":"Savaria K2","citations":[{"source_domain":"savaria.com","source_type":"company","title":"K2 Straight Stairlift","url":"https://www.savaria.com/stairlifts/products/straight-k2"},{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"}],"confidence":"high","important_limitations":["Straight stairs only","Weight capacity drops over steeper inclines"],"official_website":"https://www.savaria.com","pricing_summary":"From approximately $3,299 installed","rank":2,"recommended_product_or_plan":"Savaria K2 straight stairlift","strongest_use_case_features":["10.75-inch folded depth","Compact L or V seat options","350 lb capacity","Rack and pinion drive"],"why_it_fits":"Folds to 10.75 inches from wall; explicitly designed for narrow staircases and available via US dealers."},{"canonical_name":"Bruno Elan","citations":[{"source_domain":"lifewaymobility.com","source_type":"company","title":"Compact Stair Lifts for Narrow Staircases","url":"https://www.lifewaymobility.com/blog/best-stair-lifts-for-narrow-stairs/"},{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"}],"confidence":"high","important_limitations":["Best for straight stairs","Lower weight capacity than premium models"],"official_website":"https://www.bruno.com","pricing_summary":"From approximately $3,900 installed","rank":3,"recommended_product_or_plan":"Bruno Elan straight stairlift","strongest_use_case_features":["Slim rail design","Folding seat/armrest/footrest","300 lb capacity","Battery backup"],"why_it_fits":"Narrow vertical rail and folding components suit stairways 28-30 inches wide; US-manufactured and widely available."},{"canonical_name":"Otolift Modular","citations":[{"source_domain":"lifewaymobility.com","source_type":"company","title":"Compact Stair Lifts for Narrow Staircases","url":"https://www.lifewaymobility.com/blog/best-stair-lifts-for-narrow-stairs/"}],"confidence":"moderate","important_limitations":["Curved models require custom measurement","Availability through select dealers"],"official_website":"https://www.lifewaymobility.com","pricing_summary":"Project-based pricing, typically higher for curved","rank":4,"recommended_product_or_plan":"Otolift Modular Curved stairlift","strongest_use_case_features":["Thinnest rail profile","Accommodates 24-inch stairs","Reverse drive technology","Folding components"],"why_it_fits":"Modular rail and turn-go seat accommodate curved stairs as narrow as 24 inches; available in US via dealers like Lifeway Mobility."},{"canonical_name":"Handicare 1100","citations":[{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"}],"confidence":"moderate","important_limitations":["Lower weight capacity options","Primarily straight stairs"],"official_website":"https://www.handicare.com","pricing_summary":"From approximately $2,600–$3,700 installed","rank":5,"recommended_product_or_plan":"Handicare 1100 straight stairlift","strongest_use_case_features":["12.6-inch folded profile","Friction-drive system","Patented slim rail"],"why_it_fits":"Ultra-streamlined 12.6-inch folded profile and slim design for narrow US stairways."}],"research_date":"2026-08-12","topic":"Best Stairlifts for Narrow Staircases"},"platform":"grok","promptCommitmentSha256":"ee445ac7a1a5474f8acaf03777bfb2924e44c6d742ca739b6d762d3dea37abb3","researchDateReported":"2026-08-12","responseCommitmentSha256":"b840e709a0df3b018680f29fb81b748dcc01b464e4380b54f91a103d7f8d997b","stage":"ranking_discovery","status":"valid"},{"completedAt":"2026-08-12 05:26:59.103802+00","evidence":{"methodology_note":"One response to one standardized ranking prompt.","platform_name":"Perplexity","recommendations":[{"canonical_name":"Access BDD Flow X","citations":[{"source_domain":"accessbdd.com","source_type":"company","title":"Stair Lifts for Narrow Staircases","url":"https://www.accessbdd.com/us/stair-lifts-for-narrow-staircases/"},{"source_domain":"which.co.uk","source_type":"review","title":"Best stairlift brands - Which?","url":"https://www.which.co.uk/reviews/stairlifts/article/best-stairlift-brands-aXz5b3H3bI62"},{"source_domain":"seniorstairlifts.co.uk","source_type":"directory","title":"Best Stairlifts For Narrow Or Spiral Stairs [Expert Picks]","url":"https://seniorstairlifts.co.uk/news/best-stairlifts-for-narrow-or-spiral-stairs-expert-picks/"}],"confidence":"high","important_limitations":["Availability depends on U.S. dealer coverage and installation network","Curved-stair pricing and lead times are not standardized publicly","For some homes under 30 in, site-specific clearance may still rule out a lift"],"official_website":"https://www.accessbdd.com/us/stair-lifts-for-narrow-staircases/","pricing_summary":"Quote-based; no reliable public U.S. list price found in the available sources.","rank":1,"recommended_product_or_plan":"Flow X stairlift (straight/curved configurations via Access BDD network in the U.S.)","strongest_use_case_features":["Minimum stair width: 610 mm (24 in)","Slim single-tube rail","Auto-swivel seat for tight corners","Compact fit for narrow and awkward staircases"],"why_it_fits":"Best match for very narrow stairways because it is explicitly designed for tight spaces, including staircases as narrow as 610 mm (24 in), with a slim single-tube rail and auto-swivel seating to reduce obstruction and turning radius."},{"canonical_name":"Stannah Siena","citations":[{"source_domain":"stannah.com","source_type":"company","title":"Stannah Siena - Compact Stairlift for Narrow Staircases","url":"https://www.stannah.com/en-us/stairlifts/stannah-siena"},{"source_domain":"stannah.com","source_type":"company","title":"Your Guide to Compact Stairlifts for Narrow Stairs","url":"https://www.stannah.com/en-us/resources/stairlifts-dont-get-way"},{"source_domain":"which.co.uk","source_type":"review","title":"Best stairlift brands - Which?","url":"https://www.which.co.uk/reviews/stairlifts/article/best-stairlift-brands-aXz5b3H3bI62"}],"confidence":"high","important_limitations":["Public U.S. page provided limited technical dimensions in the search results","May not suit extremely tight stairs if local clearance is below installer minimums","Price is quote-based"],"official_website":"https://www.stannah.com/en-us/stairlifts/stannah-siena","pricing_summary":"Quote-based; no verified public U.S. list price in the supplied sources.","rank":2,"recommended_product_or_plan":"Stannah Siena compact stairlift","strongest_use_case_features":["Compact design for narrow staircases","U.S. availability through Stannah","Suitable when preserving foot traffic is a priority"],"why_it_fits":"A strong U.S. option for narrow straight staircases because Stannah markets it specifically as a compact stairlift for narrow stairs, making it a practical fit when folded-footprint and passenger clearance matter."},{"canonical_name":"Harmar Pinnacle SL600","citations":[{"source_domain":"harmar.com","source_type":"company","title":"Comparing the Best Stairlift Brands","url":"https://www.harmar.com/blog/compare-the-best-stairlifts-harmar-vs-handicare-stannah-bruno-and-acorn/"},{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"},{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts of 2025 (With Costs)","url":"https://www.retirementliving.com/stair-lifts"}],"confidence":"moderate","important_limitations":["The exact folded width and minimum staircase width were not consistently stated in the supplied sources","Some model-specific dimensions require dealer confirmation","Quote-based pricing"],"official_website":"https://www.harmar.com/blog/compare-the-best-stairlifts-harmar-vs-handicare-stannah-bruno-and-acorn/","pricing_summary":"Quote-based; no reliable public list price found in the provided sources.","rank":3,"recommended_product_or_plan":"Harmar Pinnacle SL600 straight stairlift","strongest_use_case_features":["Narrow folded profile","Good fit when aisle clearance is the main constraint","U.S. manufacturer with dealer-based availability"],"why_it_fits":"Well suited to narrow U.S. stairways because independent and company sources describe Harmar’s Pinnacle line as having one of the narrowest folded profiles on the market, which helps minimize blockage of foot traffic."},{"canonical_name":"Handicare Freecurve","citations":[{"source_domain":"lifewaymobility.com","source_type":"company","title":"Compare Best Stair Lifts of 2025","url":"https://www.lifewaymobility.com/resources/product-guides/stair-lift-comparison-chart/"},{"source_domain":"elderlifefinancial.com","source_type":"other","title":"Best Stair Lifts of 2026 - ElderLife Financial Services","url":"https://www.elderlifefinancial.com/best-stair-lifts-of-2026/"},{"source_domain":"mobility123.com","source_type":"review","title":"Best Stairlift Brands 2026: Bruno vs Acorn vs Access BDD ...","url":"https://www.mobility123.com/blog/best-stairlift-brands-comparison-guide/"}],"confidence":"moderate","important_limitations":["Best suited to curved or difficult layouts rather than the tightest straight-run stairs","Public U.S. source details in the supplied results were incomplete","Pricing varies by dealer and configuration"],"official_website":"https://www.lifewaymobility.com/resources/product-guides/stair-lift-comparison-chart/","pricing_summary":"Quote-based; no reliable public list price in the supplied sources.","rank":4,"recommended_product_or_plan":"Handicare Freecurve curved stairlift","strongest_use_case_features":["Slim single-tube rail","Designed for tight, winding staircases","Powered swivel seat available on some dealer offerings"],"why_it_fits":"A good narrow-stair choice when the staircase is tight and/or curved, because it is repeatedly described as using a slim single-tube rail and being built for tight, winding staircases."},{"canonical_name":"Bruno Elan Straight Stair Lift","citations":[{"source_domain":"consumeraffairs.com","source_type":"review","title":"Best Stair Lifts","url":"https://www.consumeraffairs.com/homeowners/stairlifts/"},{"source_domain":"modernize.com","source_type":"review","title":"Best Stairlift Brands of 2026 for Safe Home Mobility","url":"https://modernize.com/stair-lifts/best-brands"},{"source_domain":"elderlifefinancial.com","source_type":"other","title":"Best Stair Lifts of 2026 - ElderLife Financial Services","url":"https://www.elderlifefinancial.com/best-stair-lifts-of-2026/"}],"confidence":"moderate","important_limitations":["The exact folded depth and minimum stair width were not provided in the available sources","Best fit is usually confirmed by dealer measurement rather than brochure specs","Not the narrowest option in the market"],"official_website":"https://www.consumeraffairs.com/homeowners/stairlifts/","pricing_summary":"Quote-based; public starting prices were not verified in the supplied sources for this exact model.","rank":5,"recommended_product_or_plan":"Bruno Elan straight stair lift","strongest_use_case_features":["U.S.-made manufacturer","Slim rail design","Strong general dealer support","Good value relative to premium imports"],"why_it_fits":"A strong value-oriented U.S. option for narrow straight staircases because Bruno is repeatedly cited as a top manufacturer and is known for slim rails and folded-to-wall designs that preserve walking space."},{"canonical_name":"Savaria K2","citations":[{"source_domain":"caringvillage.com","source_type":"review","title":"10 Best Stair Lift Companies of 2026, Compared","url":"https://caringvillage.com/product-reviews/stair-lifts/"},{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts of 2025 (With Costs)","url":"https://www.retirementliving.com/stair-lifts"},{"source_domain":"mobility123.com","source_type":"review","title":"Best Stairlift Brands 2026: Bruno vs Acorn vs Access BDD ...","url":"https://www.mobility123.com/blog/best-stairlift-brands-comparison-guide/"}],"confidence":"low","important_limitations":["The provided sources did not give a consistent manufacturer-published U.S. dimension sheet","Availability and exact configuration should be confirmed with a U.S. dealer","Not enough primary-source dimensional detail in the results"],"official_website":"https://caringvillage.com/product-reviews/stair-lifts/","pricing_summary":"Quote-based; no verified public list price found in the supplied sources.","rank":6,"recommended_product_or_plan":"Savaria K2 straight stairlift","strongest_use_case_features":["Very slim folded profile reported around 10.5–10.75 in in review sources","Compact straight-stair footprint","Useful when preserving foot traffic is critical"],"why_it_fits":"A credible narrow-stair contender because it is listed among models with very slim folded profiles, making it useful where the stair width is under 30 inches and the lift must stay as unobtrusive as possible."},{"canonical_name":"Handicare 1100","citations":[{"source_domain":"seniorstairlifts.co.uk","source_type":"directory","title":"Narrow Stair Lift Guide: Flow X, Platinum Ultimate & More","url":"https://seniorstairlifts.co.uk/news/what-is-the-most-narrow-stair-lift/"},{"source_domain":"modernize.com","source_type":"review","title":"Best Stairlift Brands of 2026 for Safe Home Mobility","url":"https://modernize.com/stair-lifts/best-brands"},{"source_domain":"accessbdd.com","source_type":"company","title":"Stairlifts for Narrow Staircases | Discover ASL Technology Today","url":"https://www.accessbdd.com/us/stair-lifts-for-narrow-staircases/"}],"confidence":"low","important_limitations":["The strongest dimensional details in the supplied results came from non-U.S. sources","U.S. availability is dealer-dependent and was not fully documented in the provided sources","No trustworthy public U.S. price was found"],"official_website":"https://seniorstairlifts.co.uk/news/what-is-the-most-narrow-stair-lift/","pricing_summary":"Quote-based; no verified public U.S. list price in the supplied sources.","rank":7,"recommended_product_or_plan":"Handicare 1100 straight stairlift","strongest_use_case_features":["Very narrow profile","Straight-stair use where space is extremely limited","Compact folded form"],"why_it_fits":"Often recommended for very narrow straight staircases because it is described as one of the narrowest stairlifts, which can be useful when the available width is close to the practical minimum."},{"canonical_name":"Acorn 130 Stairlift","citations":[{"source_domain":"modernize.com","source_type":"review","title":"Best Stairlift Brands of 2026 for Safe Home Mobility","url":"https://modernize.com/stair-lifts/best-brands"},{"source_domain":"retirementliving.com","source_type":"review","title":"Best Stair Lifts of 2025 (With Costs)","url":"https://www.retirementliving.com/stair-lifts"},{"source_domain":"consumeraffairs.com","source_type":"review","title":"Best Stair Lifts","url":"https://www.consumeraffairs.com/homeowners/stairlifts/"}],"confidence":"low","important_limitations":["Not identified in the supplied sources as the best narrow-stair specialist","Public sources did not confirm the smallest folded depth or minimum staircase width","Less compelling than purpose-built narrow-fit models for sub-30-inch stairs"],"official_website":"https://modernize.com/stair-lifts/best-brands","pricing_summary":"Typically quote-based; no reliable model-specific public list price found in the supplied sources.","rank":8,"recommended_product_or_plan":"Acorn 130 straight stairlift","strongest_use_case_features":["Widely available in the U.S.","Fast installation reputation","Straight-stair option"],"why_it_fits":"A common U.S. choice with broad availability and quick installation, which can be attractive when the buyer needs a straightforward straight-stair solution and dealer access matters more than the absolute slimmest profile."},{"canonical_name":"Bruno Elite Curved Indoor Stair Lift","citations":[{"source_domain":"elderlifefinancial.com","source_type":"other","title":"Best Stair Lifts of 2026 - ElderLife Financial Services","url":"https://www.elderlifefinancial.com/best-stair-lifts-of-2026/"},{"source_domain":"consumeraffairs.com","source_type":"review","title":"Best Stair Lifts","url":"https://www.consumeraffairs.com/homeowners/stairlifts/"},{"source_domain":"modernize.com","source_type":"review","title":"Best Stairlift Brands of 2026 for Safe Home Mobility","url":"https://modernize.com/stair-lifts/best-brands"}],"confidence":"low","important_limitations":["Curved systems usually need more room than straight lifts","No public narrow-stair minimum width was confirmed in the supplied results","Likely overkill for a simple straight stair under 30 inches"],"official_website":"https://www.elderlifefinancial.com/best-stair-lifts-of-2026/","pricing_summary":"Quote-based; no verified public list price in the supplied sources.","rank":9,"recommended_product_or_plan":"Bruno Elite curved indoor stair lift","strongest_use_case_features":["Premium curved-stair build","Slim rail reputation","Strong U.S. dealer network"],"why_it_fits":"A premium curved-stair option that may fit narrow staircases better than many generic curved lifts because Bruno is consistently described as having slim rails and strong fit-and-finish."},{"canonical_name":"Stannah Starla","citations":[{"source_domain":"consumeraffairs.com","source_type":"review","title":"Best Stair Lifts","url":"https://www.consumeraffairs.com/homeowners/stairlifts/"},{"source_domain":"modernize.com","source_type":"review","title":"Stannah - Best Brands of 2026","url":"https://modernize.com/stair-lifts/best-brands"},{"source_domain":"stannah.com","source_type":"company","title":"Your Guide to Compact Stairlifts for Narrow Stairs","url":"https://www.stannah.com/en-us/resources/stairlifts-dont-get-way"}],"confidence":"low","important_limitations":["The supplied sources did not provide the narrowest dimensions or folded profile for this model","Less explicitly narrow-focused than the Siena","Quote-based pricing"],"official_website":"https://www.consumeraffairs.com/homeowners/stairlifts/","pricing_summary":"Quote-based; public starting price was not verified in the supplied sources for this exact model.","rank":10,"recommended_product_or_plan":"Stannah Starla straight stairlift","strongest_use_case_features":["Straight-stair configuration","Established U.S. brand presence","Good fit when the staircase is narrow but not extreme"],"why_it_fits":"A usable compact straight-stair option from a reputable U.S.-available manufacturer, especially when the buyer wants a well-supported brand and a standard straight configuration."}],"research_date":"2026-08-12","topic":"Best Stairlifts for Narrow Staircases"},"platform":"perplexity","promptCommitmentSha256":"ee445ac7a1a5474f8acaf03777bfb2924e44c6d742ca739b6d762d3dea37abb3","researchDateReported":"2026-08-12","responseCommitmentSha256":"65f0998826f254597806137e27c084b66a55a6d8c4505bf6533be678334c7d84","stage":"ranking_discovery","status":"valid"},{"completedAt":"2026-08-12 05:27:36.466862+00","evidence":{"methodology_note":"One response to one standardized ranking prompt.","platform_name":"","recommendations":[{"canonical_name":"Harmar SL600 Pinnacle Premium","citations":[{"source_domain":"harmar.com","source_type":"company","title":"SL600 Pinnacle Premium Stairlifts – Harmar","url":"https://www.harmar.com/products/sl600/"}],"confidence":"high","important_limitations":["Straight stairs only—no curved configuration","Folding rail option increases folded width to 13 5/8\"","Seat size 18\" x 14 3/8\" may be snug for larger users"],"official_website":"https://www.harmar.com/products/sl600/","pricing_summary":"Mid-to-premium pricing tier; exact pricing requires dealer quote. Typically $3,000-$5,500 installed depending on track length and options.","rank":1,"recommended_product_or_plan":"SL600 Pinnacle Premium Straight Stairlift","strongest_use_case_features":["10.5\" folded width—narrowest available","No grease/lubrication nylon gear rack","60-trip battery backup capacity","350 lb weight capacity","Optional folding rail for doorway clearance"],"why_it_fits":"Narrowest folded profile in the industry at 10.5 inches from wall, specifically engineered for narrow stairways. Made in USA with established distribution network. 350 lb capacity despite compact design. Nylon polymer gear rack requires no grease, reducing maintenance. Up to 60 trips on battery backup during outages."},{"canonical_name":"Bruno Elan SRE-3050","citations":[{"source_domain":"accesssolutionsonline.com","source_type":"company","title":"Bruno Elan SRE-3050 Stairlift | Access Solutions, Inc.","url":"https://www.accesssolutionsonline.com/stairlifts/bruno-elan"}],"confidence":"high","important_limitations":["Straight stairs only","300 lb capacity lower than some competitors","Specific folded width dimension not stated in available materials"],"official_website":"https://www.bruno.com","pricing_summary":"Premium pricing; typically $3,500-$6,000 installed. Bruno's domestic manufacturing and service network command price premium.","rank":2,"recommended_product_or_plan":"Elan SRE-3050 Straight Indoor Stairlift","strongest_use_case_features":["Ultra-narrow vertical rail closest to wall","Offset swivel seat extends away from steps","300 lb capacity","Covered gear rack for clean appearance","Engineered and manufactured in USA"],"why_it_fits":"Marketed as installing closer to wall than any stairlift on market via ultra-narrow vertical rail. Made in Wisconsin, USA. Offset swivel seat rotates 90 degrees and extends away from steps, critical for narrow landings. Strong domestic manufacturing and service network."},{"canonical_name":"Savaria K2","citations":[{"source_domain":"savaria.com","source_type":"company","title":"K2 Straight Stairlift | Best-Selling for Seniors - Savaria","url":"https://www.savaria.com/stairlifts/products/straight-k2"}],"confidence":"high","important_limitations":["Straight stairs only","Slightly wider folded profile than Harmar SL600","Canadian company—US service network less extensive than domestic manufacturers"],"official_website":"https://www.savaria.com","pricing_summary":"Mid-range pricing; competitive value. Typically $2,800-$4,500 installed.","rank":3,"recommended_product_or_plan":"K2 Straight Stairlift with L Seat or V Seat","strongest_use_case_features":["10.75\" folded depth with L seat","Width-adjustable armrests","350 lb capacity","Battery powered with built-in charging","Quick installation"],"why_it_fits":"Canadian manufacturer with US distribution. Folds to 10.75\" (L seat) or 11.25\" (V seat)—among the most compact. Rack and pinion system proven reliable. Width-adjustable armrests allow customization. Quick installation. Good value proposition for narrow straight stairs."},{"canonical_name":"Handicare 1100","citations":[{"source_domain":"101mobility.com","source_type":"company","title":"Handicare 1100: Sleek and Slim Straight Stairlift for Narrow Spaces | 101 Mobility","url":"https://www.101mobility.com/products/handicare-1100/"}],"confidence":"high","important_limitations":["Higher folded profile than top three options","309 lb weight capacity—lower than competitors","Requires dealer network (101 Mobility) for US availability","Straight stairs only"],"official_website":"https://www.handicare.com","pricing_summary":"Mid-to-premium range with upgrade costs for powered features. Typically $3,200-$5,500 depending on configuration.","rank":4,"recommended_product_or_plan":"1100 Straight Stairlift with Style Seat option","strongest_use_case_features":["12.6\" slim folded profile","Patented Multi-Drive System and Friction Design","Powered swivel and footrest upgrade options","Continuous charging","Modern aesthetic design"],"why_it_fits":"12.6\" folded profile with patented multi-drive and friction design systems. Available through 101 Mobility dealer network in US. Style Seat option adds powered footrest folding and swivel for enhanced narrow-space usability. Modern aesthetic. Continuous charging function."},{"canonical_name":"Access Flow X","citations":[{"source_domain":"powerstairlifts.com","source_type":"company","title":"Access Flow X Stairlift from Power Stair Lifts—Widely Used for Narrow Staircases","url":"https://powerstairlifts.com/access-flow-x-stairlift-for-narrow-staircases/"}],"confidence":"moderate","important_limitations":["European manufacturer—US availability and service network less certain","Specific folded dimensions not stated in available materials","Less established US dealer network","Higher complexity may mean higher maintenance"],"official_website":"https://www.accessbility.com","pricing_summary":"Premium pricing expected due to advanced technology and curved capability. Exact US pricing insufficiently available; likely $4,500-$8,000+.","rank":5,"recommended_product_or_plan":"Flow X Stairlift","strongest_use_case_features":["Minimum 24\" staircase width—narrowest requirement","Single rail design close to step","Straight AND curved staircase compatibility","ASL technology for steep/narrow combinations","Installs on either side"],"why_it_fits":"Advanced Swivel and Levelling (ASL) technology enables installation on staircases as narrow as 610mm (24 inches)—narrowest minimum width requirement found. Single rail design installs closer to step. Handles both straight and curved narrow staircases, unique among compact options. Critical for very narrow stairs where others won't fit."},{"canonical_name":"Stannah Siena","citations":[{"source_domain":"stannah.com","source_type":"company","title":"Compact Stairlift for Narrow Staircases | Siena Stairlift","url":"https://www.stannah.com/en-us/stairlifts/stannah-siena"}],"confidence":"high","important_limitations":["Larger folded profile (14.5\"-16\") than leading competitors","May not fit under 30\" staircases where foot traffic preservation is critical","Premium pricing","British company—some production overseas"],"official_website":"https://www.stannah.com/en-us","pricing_summary":"Premium tier; typically $4,000-$7,500+ depending on straight/curved and customization.","rank":6,"recommended_product_or_plan":"Siena Straight or Curved Stairlift","strongest_use_case_features":["Curved seatback prevents knee protrusion","Straight and curved options","350-352 lb high capacity","Powered footrest option","Established US operations"],"why_it_fits":"British manufacturer with established US presence. 14.5\" folded depth (straight) or 16\" (curved). 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