Best Folding Stairlifts for Shared Stairways (2026)

Answer Capsule

Harmar Pinnacle SL300 Stairlift leads the September 2026 consensus ranking for Shared Household Clearance, followed by Bruno Elan SRE-3000 and Savaria K2. The current study includes 7 valid AI-platform responses and 7 qualifying entities. Compared with August 2026, the leader changed. The current list added Acorn 130 Straight Stairlift and AmeriGlide Liberty Stairlift and removed AmeriGlide Rave 2. This is an immediately preceding-month comparison. Rank movement measures changes in this collection of standardized AI-platform responses. It is not product testing, customer-review evidence, or proof that a provider's underlying quality improved or declined.

What Changed Since August 2026

This comparison uses the immediately preceding completed month.

Harmar Pinnacle SL300 Stairlift remained No. 1 in September 2026. It was named by 6 platforms, compared with 3 in August 2026. Both studies used 7 valid platform responses.

The largest upward moves were Harmar Pinnacle SL300 Stairlift (up 2) and Handicare 1100 (up 1). The largest downward moves were Bruno Elan SRE-3000 (down 1) and Savaria K2 (down 1).

The current qualifying set added Acorn 130 Straight Stairlift and AmeriGlide Liberty Stairlift. It no longer includes AmeriGlide Rave 2 from the earlier top group. Entry or exit reflects the minimum-mention rule and the current response set, not a product launch, discontinuation, or quality finding.

The table is calculated directly from the two stored ranking datasets. Positive rank movement means an entity moved closer to No. 1; mention change shows the difference in the number of included platform responses naming it.

The August 2026 edition preserves the complete earlier ranking and methodology for reference.

Research Snapshot

• Topic: Best folding stairlifts for shared stairways, evaluated for the use case "Shared Household Clearance."
• Target buyer: Families where other household members need to continue using the stairs safely after the stairlift is folded away.
• Geography: United States.
• Platforms included (7): openai, anthropic, deepseek, grok, perplexity, kimi, google.
• Research date: 2026-09-27 (the authoritative run date). Platform-reported dates are provenance metadata and do not independently prove freshness.
• Unique entities named: 13.
• Qualifying entities: 7.
• Eligibility rule: An entity qualified only if it was named by at least two platforms during ranking discovery.
• Ranking unit: Folding stairlift model and manufacturer.
• Category criteria applied: folded depth, folding rail availability, automatic footrest, armrest folding ease, obstruction sensor sensitivity, parked footprint, installation fit, and warranty coverage.

The Consensus Ranking

Questions This Section Answers

• What are the best folding stairlifts for shared household clearance in 2026?
• Which folding stairlift models did the most AI platforms name for keeping a shared stairway usable?
• How many platforms named each folding stairlift for shared household clearance?

The table below is the authority for rank, platform mentions, platform share, average listed position, and best position. Platform mentions count only ranking-discovery mentions; they do not count platforms that later completed a fit assessment.

Which Option Is Best for Which Version of the Buyer Need?

Questions This Section Answers

• Which folding stairlift should a buyer choose for a shared stairway if the narrowest folded depth matters most?
• Is the Harmar Pinnacle SL300 or the Savaria K2 better for a shared stairway when the bottom landing is tight?
• Which folding stairlift for shared household clearance has the lowest published equipment price?

Buyers arrive at this category with different constraints. The table maps each version of the buyer need to the ranked entity whose supplied evidence best matches it. No row implies a different order than the consensus ranking table.

1. Harmar Pinnacle SL300 Stairlift

Questions This Section Answers

• Is the Harmar Pinnacle SL300 Stairlift worth it for shared household clearance, and what are its main drawbacks?
• Does the Harmar Pinnacle SL300 include an automatic folding rail and a power folding footrest as standard?
• What should a buyer verify before choosing the Harmar Pinnacle SL300 for a shared stairway?

Verdict. The Harmar Pinnacle SL300 Stairlift is the consensus leader for shared household clearance and the only entity in this study that every naming platform placed first. Its case rests on a compact parked profile and an optional automatic folding rail that clears a doorway, wall, or walkway at the bottom of the stairs. The fit is conditional rather than unconditional: the features that matter most for a shared stairway are options, and the published dimensions do not establish the remaining usable stair width in any particular home.

Why it ranked here. Six of seven platforms named the SL300, at an average listed position of 1.0 and a best position of 1. The ranking reflects consistent naming across openai, anthropic, deepseek, grok, perplexity, kimi, and google during ranking discovery, not a verified performance advantage.

Best suited for. Indoor, straight residential stairways where other household members need the stair path kept as open as practicable; households prioritizing a compact parked footprint and an automatic folding rail near a doorway, wall, or walkway; and buyers who can obtain a dealer measurement and are comfortable treating several convenience features as options.

Main strengths for this use case. Harmar specifies an 11-inch folded width from the wall for the SL300 and 13 5/8 inches with a folding rail, with the rail mounting about 1 inch from the wall and standing about 3 inches tall when folded [e1:openai:c1][e1:perplexity:c1]. An automatic folding rail is an available option, and Harmar states that a folding rail can help avoid obstructions near doorways, walls, or walkways [e1:openai:c2]. A footrest obstruction sensor is standard, and a chassis obstruction sensor is listed as an available option [e1:openai:c3]. Harmar states that the battery system can provide up to 60 trips during a power outage, while noting that actual performance depends on battery condition, passenger load, and rail length [e1:openai:c6]. The drive uses a lubrication-free nylon polymer gear with a helical worm drive, which reduces grease on shared stairs [e1:anthropic:c7].

Main limitations. The automatic folding rail and the power folding footrest are options, not standard equipment, so the quoted configuration determines whether the shared-clearance benefit exists at all [e1:openai:c1][e1:openai:c3]. The SL300 is unsuitable for curved or multi-flight staircases; Harmar directs those situations toward a curved model such as Helix [e1:openai:c1]. Published dimensions do not guarantee adequate passing space for other household members, and no cited independent evidence verifies armrest folding effort, obstruction-sensor sensitivity, or real-world parked clearance [e1:openai:c1]. Warranty exclusions leave labor, maintenance, adjustments, and outdoor or commercial use outside the stated coverage [e1:openai:c5]. Weight capacity is 300 lb, lower than the SL600's 350 lb [e1:google:1.3.9].

Pricing or cost summary. No manufacturer MSRP or publicly fixed installed price was identified on the cited official product materials; Harmar directs buyers to authorized dealers and requests a quote [e1:openai:c1]. Dealer listings cited by one platform show a base unit around $3,500–$4,000 installed, with the folding rail option adding roughly $1,860, and another source cites a typical range of $3,000–$4,500 including standard installation, rising to approximately $5,250 with the automatic folding rail [e1:grok:9][e1:google:1.3.1][e1:google:1.3.4]. These figures are dealer-reported and not authoritative. Pricing confidence across the evidence is low.

What Changed Since August 2026

Harmar Pinnacle SL300 Stairlift moved up from No. 3 to No. 1, and platform mentions increased from 3 to 6. The September 2026 article shifts from describing Harmar's SL600 and SL300 together to focusing on the Pinnacle SL300 as a single named product, which changes how a buyer reads the recommendation. Its strengths now center on an 11-inch folded width from the wall, a rail mounted about 1 inch from the wall and standing about 3 inches tall when folded, and a battery system rated for up to 60 trips during an outage. The article newly reports $3,500–$4,000 for a base unit and $1,860 for the folding rail option; the earlier $6,410 figure is no longer repeated. The automatic folding rail and power folding footrest remain options, so configuration still determines the clearance benefit. Differences between the two editions reflect what each article reports; they do not by themselves prove that the product, service, or price changed.

2. Bruno Elan SRE-3000

Questions This Section Answers

• Is the Bruno Elan SRE-3000 worth it for shared household clearance, and what are its main drawbacks?
• Is the Bruno Elan SRE-3000 or the Harmar Pinnacle SL300 better for a shared stairway when indoor warranty coverage matters?
• Which Bruno Elan model number should a buyer confirm before ordering a folding rail for a shared stairway?

Verdict. The Bruno Elan SRE-3000 is the strongest alternative to the consensus leader for households that weight U.S. dealer support, obstruction sensors, and indoor warranty language. Its narrow vertical rail, folding components, and battery operation are directly relevant to a shared stairway. The decisive clearance facts, however, are configuration-specific and insufficiently published, and the model-number lineage between the SRE-3000 and SRE-3050 is unresolved across platforms.

Why it ranked here. Six of seven platforms named the entity, at an average listed position of 2.67 and a best position of 1. Deepseek placed it first; openai and grok placed it second; anthropic third; google and perplexity fourth.

Best suited for. Straight indoor staircases where the rail can be mounted close to the wall and household members need the chair folded when not in use; buyers prioritizing a U.S.-supported product with obstruction sensors and substantial indoor warranty coverage; and homes where a dealer can demonstrate that the selected folding rail and footrest do not obstruct the remaining walking path.

Main strengths for this use case. Bruno states that straight stairlifts have safety sensors integrated into the footrest and seat carriage that stop the lift if an obstruction is encountered [e2:openai:c2]. For new indoor stairlifts installed by a Bruno authorized dealer, Bruno states that major components receive a limited lifetime warranty, other parts receive two years, and installation labor for defects is covered for 30 days [e2:openai:c5]. The vertical rail installs within 5 inches of the wall, and the unit folds to a 12-inch position when the rail is fully folded. Armrests are fixed to the seat frame but can be individually rotated toward the seat back for a smaller profile. Continuous charge strips along the rail repower the unit wherever it stops.

Main limitations. The exact folded depth and parked footprint are not verified for the configured SRE-3000, and folding-rail and power-folding-footrest availability for the exact model is not clearly confirmed in current official material [e2:openai:c1]. The 300 lb capacity may exclude households needing a higher-capacity lift; Bruno identifies the Elite models as the higher-capacity option [e2:openai:c1]. Sensor systems do not guarantee that the remaining stairs are safe or sufficiently wide for other users [e2:openai:c1]. Warranty labor coverage is limited, and optional equipment may not receive the same treatment as major components [e2:openai:c5]. The parked position is listed at approximately 48.7–49.0 inches in a typical 45-degree installation, which may still obstruct narrow lower landings.

Pricing or cost summary. No verified public U.S. purchase price was found for the exact SRE-3000 configuration; Bruno directs buyers to a dealer quote [e2:openai:c1]. Independent sources cited by one platform place Elan/SRE-3000 installed pricing around $3,500 to $5,500 for straight indoor models, with higher totals when adding folding rail and power footrest options, but these are not Bruno-published [e2:perplexity:c3]. Another source cites a standard straight installation range of $3,000 to $5,000 including basic labor [e2:google:1.1.1]. Pricing confidence is low.

Where platforms disagreed. Fit ratings split between "strong" (grok, google), "good" (anthropic), and "mixed" (openai, deepseek, perplexity), with kimi rating it "uncertain." Kimi states that the SRE-3000 is not the current model recommended in the ranking stage and that the SRE-3050 successor is the relevant model, suggesting the SRE-3000 may be discontinued or superseded [e2:kimi:bruno-models-unclear-1].

What Changed Since August 2026

Bruno Elan SRE-3000 moved down from No. 1 to No. 2, and platform mentions increased from 5 to 6. The September 2026 article shifts the focus from Bruno's lineup to the Bruno Elan SRE-3000 specifically, and its framing is more cautious. The earlier write-up presented the Elan SRE-3050 as the folding model and cited an approximate 12-inch folded profile; the current section now treats the SRE-3000's exact folded depth and parked footprint as unverified, noting a listed parked position of roughly 48.7–49.0 inches in a typical 45-degree installation. It newly reports installed pricing of $3,500 to $5,500 and $3,000 to $5,000, while the earlier $4,000 indicative starting figure is no longer repeated. Buyers prioritizing confirmed folding-rail compatibility should verify the model number before ordering. Differences between the two editions reflect what each article reports; they do not by themselves prove that the product, service, or price changed.

3. Savaria K2

Questions This Section Answers

• Is the Savaria K2 worth it for shared household clearance, and what are its main drawbacks?
• Which folding stairlift for a shared stairway has the narrowest published folded depth, and what does that figure not guarantee?
• Does the Savaria K2 lose weight capacity when a folding rail is fitted?

Verdict. The Savaria K2 carries the narrowest published folded chair depth in this study and is the best-matched option when every inch of stair width matters. It pairs that profile with an optional power folding rail and an optional power folding footrest. The headline dimension is a product specification, not a guarantee of usable clear width, and public pricing, armrest usability data, and sensor-performance data are absent.

Why it ranked here. Four of seven platforms named the K2, at an average listed position of 3.25 and a best position of 2. Anthropic placed it second, google and openai third, and deepseek fifth.

Best suited for. Straight indoor staircases where other household members need the narrowest practical folded chair profile; homes where a lower-landing obstruction requires a folding rail or where bending to fold the footrest would be inconvenient; and buyers willing to obtain a dealer measurement and written quote for the exact options and installation.

Main strengths for this use case. The K2 with the standard L seat has a published fold-up depth of 10.75 inches from the wall, with a fold-out depth of 21.5 inches; the V seat folds to 12 inches, so the L seat is the better clearance configuration [e3:openai:C1][e3:anthropic:c1]. A power folding rail is listed as an available option, and Savaria states that a flip-up rail can keep the lower travel rail out of the way [e3:openai:C2]. A power folding footrest is listed as an option and avoids bending down to fold the footrest [e3:openai:C4]. The K2 has an obstruction sensor system that stops the unit, with sensors on the footrest and carriage [e3:anthropic:c4]. Savaria states a 36-month parts warranty [e3:openai:C2]. The owner's manual states the K2 uses standard 110 VAC charging with charging stations at the top and bottom and provides full up-and-down travel on power interruption through battery backup [e3:openai:C2].

Main limitations. The 10.75-inch figure does not guarantee sufficient walking clearance for every household, and the folding rail and power footrest are options rather than confirmed standard equipment [e3:openai:C1]. Armrest operation and obstruction-sensor behavior lack public quantitative usability data [e3:openai:C1]. A flip-up rail or a stair angle above 45 degrees can reduce capacity to 300 lb from the 350 lb standard [e3:anthropic:c7]. The model is not intended for curved or multi-flight stairs [e3:openai:C6]. Installation manuals and some technical documents are restricted to authorized dealers, increasing dependence on local dealer availability [e3:openai:C5].

Pricing or cost summary. Savaria does not publish a standard U.S. retail price in the official K2 materials checked; pricing is dealer-quoted and varies with rail length, installation conditions, seat, folding rail, power footrest, and other options [e3:openai:C9]. One third-party 2026 cost summary reports dealer-quoted pricing rather than a manufacturer list price [e3:openai:C9]. Another source cites an approximate base price around $4,500 USD, and a separate source cites estimated manual folding rail and power folding rail upgrade prices of $795 and $1,295 respectively [e3:grok:web:17][e3:google:2.2.8]. These figures are indicative only. Pricing confidence is low.

Where platforms disagreed. Fit ratings ranged from "strong" (grok, google) to "good" (openai, anthropic, perplexity) to "mixed" (deepseek, kimi). Deepseek could not find a published numeric folded depth or parked footprint in the sources it checked and treated the fit as mixed pending dealer measurement [e3:deepseek:C1].

What Changed Since August 2026

Savaria K2 moved down from No. 2 to No. 3, and platform mentions were unchanged at 4. The September 2026 article shifts the Savaria K2's emphasis toward powered options and narrower clearance, describing it as the best match when every inch of stair width matters rather than the earlier "strong-to-good fit." The current write-up reports an approximate base price of $4,500 and a $795 power folding rail upgrade; the prior $3,299 base figure is no longer repeated. The earlier 32-foot travel figure also disappears. Capacity details are clearer: fitting a flip-up rail or exceeding a 45-degree stair angle can reduce capacity to 300 lb from the 350 lb standard. Differences between the two editions reflect what each article reports; they do not by themselves prove that the product, service, or price changed.

4. Stannah Siena

Questions This Section Answers

• Is the Stannah Siena worth it for shared household clearance, and what are its main drawbacks?
• Which folding stairlift for a shared stairway has a published U.S. starting price and a powered footrest?
• Does the Stannah Siena's armrest fold automatically, and how does that affect the folded footprint on a shared stairway?

Verdict. The Stannah Siena is the best-matched ranked option for buyers who want a published U.S. starting price, a powered footrest, and manufacturer installation. Its straight model has a published 14.5-inch folded depth, which is wider than the leaders in this study. The critical caveat for shared stairways is that the armrests do not fold automatically, so the effective folded footprint can exceed the published figure.

Why it ranked here. Three of seven platforms named the Siena, at an average listed position of 4.0 and a best position of 2. Perplexity placed it second, while anthropic and google placed it fifth.

Best suited for. Households with a straight staircase at least approximately 14.5 inches wider than the wall-side clearance requirement when the chair is folded; homes needing easier folding through a powered footrest rather than manual bending; staircases with a door or high-traffic area at the bottom where an optional automatic retracting rail may improve clearance; and buyers who value manufacturer installation, U.S. service coverage, and a substantial direct-purchase warranty.

Main strengths for this use case. Stannah lists the Siena straight model at 14.5 inches from the wall when folded and the curved model at 16 inches [e4:openai:c1]. The Siena product page says the powered footrest raises and lowers by pressing a button, and Stannah's U.S. pricing page lists footrest obstruction sensors as a standard safety feature [e4:openai:c3]. Stannah lists automatically retracting rails as an additional-cost option for stairs with doors at the bottom [e4:openai:c3]. Remote controls are listed as standard, which can let household members move or call the stairlift when multiple users share the stairs [e4:openai:c3]. The U.S. warranty-registration page states that new units have lifetime carriage motor-gearbox coverage and one year of parts and labor coverage, with parts coverage extendable up to five years [e4:openai:c5]. Stannah publicly lists U.S. starting prices of $4,700 for straight stairlifts and $10,800 for curved stairlifts [e4:openai:c3].

Main limitations. The 14.5-inch figure is not a universal installed footprint; a separate Stannah dimensions page states that straight-stair depth can vary with the rail-start position [e4:openai:c2]. The curved version is listed at 16 inches folded and may have a larger impact on shared stairway width [e4:openai:c1]. The automatic retracting rail is optional and may not suit every stair layout [e4:openai:c3]. Armrest folding mechanics and required force are not clearly documented in the checked U.S. materials, and one platform states the armrests do not automatically fold, so they remain extended when the seat is folded [e4:openai:c1][e4:anthropic:c1]. Sensor sensitivity and false-stop performance are not publicly quantified [e4:openai:c1]. Post-first-year labor and some wear components may remain buyer costs despite lifetime gearbox coverage [e4:openai:c6]. The published price is a starting price rather than a guaranteed installed price [e4:openai:c3].

Pricing or cost summary. Stannah publicly lists U.S. starting prices of $4,700 for straight stairlifts and $10,800 for curved stairlifts, with quotes customized [e4:openai:c3]. One platform cites typical straight pricing of $5,700–$6,200 and optional powered features adding $800–$2,000 or more, with a retractable rail estimated at $800–$1,500, but these figures are unconfirmed [e4:anthropic:c3]. Another cites straight installs ranging from $4,700 to $8,500 and curved from $8,500 to $14,500 or more [e4:google:2.1.4].

What Changed Since August 2026

Stannah Siena remained at No. 4, and platform mentions were unchanged at 3. The September 2026 article substantially rewrites the Stannah Siena entry, with the verdict, fit guidance, strengths, limitations, and pricing all refreshed. Where the earlier write-up described the item as "Stannah" with the Siena 600 and Siena 260 named as variants, the current section treats the Siena as the ranked product and centers the straight model's 14.5-inch folded depth, warning that the armrests do not fold automatically, so the effective footprint can exceed that published figure. On pricing, the current article newly reports $5,700–$6,200 for typical straight installations and $800–$2,000 for optional powered features; the earlier $2,500–$9,000 straight-model range is no longer repeated. Differences between the two editions reflect what each article reports; they do not by themselves prove that the product, service, or price changed.

5. Handicare 1100

Questions This Section Answers

• Is the Handicare 1100 worth it for shared household clearance, and what are its main drawbacks?
• Is the Handicare 1100 or the Savaria K2 better for a shared stairway when the bottom landing must stay clear without manual folding?
• What should a buyer verify about the Handicare 1100's Slide Track and powered footrest before ordering for a shared stairway?

Verdict. The Handicare 1100 is the best-matched ranked option when the landing obstruction, rather than the chair profile, is the core problem. Its documented Slide Track configuration moves the rail clear without manual folding, and its published folded depth of 12.6 inches is competitive. The fit is conditional because the powered footrest and landing-clearance options are options rather than standard, and U.S. pricing, warranty labor coverage, and sensor sensitivity are not consistently published.

Why it ranked here. Three of seven platforms named the 1100, at an average listed position of 5.0 and a best position of 2. Google placed it second, deepseek fourth, and anthropic ninth.

Best suited for. Straight indoor staircases where other users need the maximum practical walking width after the lift is folded; households needing a slim rail, compact parked footprint, and optional powered footrest; and staircases with a potential bottom- or top-landing obstruction that can be addressed by a Slide Track or hinge configuration.

Main strengths for this use case. The 1100 brochure lists a 12.6-inch (320 mm) fold-up depth and a 20.9-inch (530 mm) fold-out depth, and Handicare states that the seat, footrest, and armrests fold when not in use [e5:openai:c1]. A standard or optional manual hinge and an automatic Slide Track are documented configurations for the 1100 [e5:openai:c3]. The powered footrest is an available option that reduces the need to bend down [e5:openai:c5]. The 1100 uses continuous charging and a friction-drive system, and the user manual recommends at least annual qualified servicing, suggesting two services per year when there are more than two users [e5:openai:c8]. Savaria's current FAQ describes Handicare models as having a 24-month manufacturer's parts warranty and limited lifetime coverage on the powertrain [e5:openai:c7]. The 1100 supports an incline range of 30 to 50 degrees with a maximum travel of 23 feet and a capacity of 309 lb at 30–45 degrees, dropping to 287 lb at 46–50 degrees [e5:anthropic:C003].

Main limitations. The 12.6-inch figure is a product specification, not a guarantee of usable clear width in the buyer's home [e5:openai:c1]. The powered footrest and landing-clearance options may increase price and must be specified in the quote [e5:openai:c1]. Public material does not establish exact armrest operating force, obstruction-sensor sensitivity, or independent shared-household safety outcomes [e5:openai:c1]. A manual hinge may require physical handling and is not equivalent to an automatic folding or sliding rail [e5:openai:c1]. The warranty may cover parts and powertrain but not labor, travel, normal wear, batteries, or misuse [e5:openai:c8]. The reviewed sources do not clearly verify that every U.S. 1100 installation includes a powered folding rail [e5:openai:c3].

Pricing or cost summary. No manufacturer-published U.S. purchase price was verified; pricing is quote-based and likely varies with rail length, installation complexity, Slide Track or hinge, powered footrest, seat options, taxes, and service coverage [e5:openai:c1]. One U.S. listing cited by a platform shows roughly $3,495–$3,995 with installation and extended warranty noted but not independently verified across sources [e5:grok:13]. Another source cites a base range of $3,495 to $3,995 with a manual hinge rail upgrade around $495 [e5:google:1.3.3]. These figures are dealer-specific. Pricing confidence is low.

Where platforms disagreed. Fit ratings ranged from "strong" (grok, google) to "good" (openai, anthropic, deepseek) to "mixed" (perplexity, kimi).

What Changed Since August 2026

Handicare 1100 moved up from No. 6 to No. 5, and platform mentions increased from 2 to 3. The September 2026 article sharpens the Handicare 1100's fit around the landing obstruction rather than the chair profile, saying the Slide Track configuration is the selling point for shared stairways. Its fold-up depth remains 12.6 inches, so the parked clearance story is unchanged. Pricing evidence is now more specific: the article newly reports roughly $3,495–$3,995, including installation, and $3,495 to $3,995 for a base range; an earlier $2,995 figure is no longer repeated. Buyers should note that the powered footrest and landing-clearance options are still options, not standard, and a maximum travel of 23 feet is newly reported. Differences between the two editions reflect what each article reports; they do not by themselves prove that the product, service, or price changed.

6. Acorn 130 Straight Stairlift

Questions This Section Answers

• Is the Acorn 130 Straight Stairlift worth it for shared household clearance, and what are its main drawbacks?
• Is the Acorn 130 or the AmeriGlide Liberty Stairlift better for a shared stairway when the buyer wants a low-cost manual hinged rail?
• Does the Acorn 130 include a power folding footrest or a powered hinged rail as standard?

Verdict. The Acorn 130 Straight Stairlift is the best-matched ranked option for buyers who want a compact folded depth with a low-cost manual hinged rail and are comfortable with manual folding. Its published 12.25-inch folded depth is competitive with the leaders. The rating remains good rather than strong because complete parked-clearance data, option-level confirmation, sensor-performance details, and U.S. pricing are not publicly verified.

Why it ranked here. Two of seven platforms named the Acorn 130, at an average listed position of 3.5 and a best position of 3. Deepseek placed it third and openai fourth.

Best suited for. Straight staircases where other household members need the maximum practical walking width after the lift is folded; homes where the lower end of the rail creates a trip or obstruction concern and a hinged rail can be fitted; and buyers who want manufacturer-installed service coverage and are willing to obtain a site-specific quote.

Main strengths for this use case. Acorn lists the Acorn 130 at 12.25 inches overall depth when folded, compared with 22.5 inches unfolded from the wall [e6:openai:c1]. Acorn states that the 130 is available with an optional hinged rail intended to eliminate an obstruction or trip hazard at the foot of the stairs, described as manually or electrically foldable [e6:openai:c3]. The product page lists a folding footrest, and Acorn states that seats, armrests, and footrests fold away when not in use [e6:openai:c4]. The user manual identifies carriage safety pads and footrest safety edges that stop the stairlift when they contact an obstruction, and Acorn states the lift stops and can be reversed away from an obstruction [e6:openai:c5][e6:openai:c6]. Acorn states that the lift mounts to the stairs rather than the wall and generally requires no structural changes, and offers a free home survey [e6:openai:c7]. New stairlifts include a 12-month manufacturer's warranty beginning at installation, covering callouts, parts, and labor subject to terms, with a scheduled first-year service [e6:openai:c8].

Main limitations. Acorn does not publicly state a complete parked-footprint measurement for every configuration, does not publish sensitivity or false-trigger performance for obstruction sensors, and does not publish U.S. pricing for the specified options [e6:openai:c1]. The reviewed public sources do not clearly verify that a power-operated or automatic footrest is standard on the U.S. Acorn 130 configuration [e6:openai:c4]. The published Acorn 130 specifications list a 280-pound maximum capacity, which may exclude some intended users [e6:openai:c1]. A stairlift rail remains installed even when the carriage is folded and parked [e6:openai:c1]. One platform states the standard model lacks a power-folding rail and power-folding footrest option, requiring household members to manually fold the lower track and carriage pieces [e6:google:1.1.3].

Pricing or cost summary. No public U.S. purchase price was verified for the Acorn 130 with the specified folding-rail, power-footrest, or hinged-rail options; Acorn says pricing is customized after a home survey [e6:openai:c1]. Independent sources cited by platforms place straight-lift installed pricing around $3,000–$8,000, with one 2026 review narrowing the Acorn 130 straight range to about $3,000–$5,000, and another citing a general straight range of $2,500–$5,500 [e6:perplexity:c4][e6:google:1.3.5].

7. AmeriGlide Liberty Stairlift

Questions This Section Answers

• Is the AmeriGlide Liberty Stairlift worth it for shared household clearance, and what are its main drawbacks?
• Which folding stairlift for a shared stairway has the lowest published equipment price, and what fees apply on top?
• Can the AmeriGlide Liberty be ordered with a folding rail, or is that option limited to the Rave 2?

Verdict. The AmeriGlide Liberty Stairlift is the best-matched ranked option for buyers prioritizing low published equipment pricing and possible self-installation. Its narrow rail and compact folded-space guidance are favorable. The evidence is insufficient to confirm the feature most likely to matter in a constrained shared stairway: a Liberty-compatible folding rail with known parked clearance. The Rave 2 is the stronger AmeriGlide candidate when a folding rail is required.

Why it ranked here. Two of seven platforms named the entity, at an average listed position of 4.5 and a best position of 3. Kimi placed it third and perplexity sixth.

Best suited for. Straight residential stairways where a compact, manually folded seat and rail leave adequate passage space; buyers prioritizing relatively low published equipment pricing and possible self-installation; and households willing to confirm the exact configuration and clearance with AmeriGlide before ordering.

Main strengths for this use case. AmeriGlide states that its stairlift track occupies about 11.5 inches of stair width and that the lift uses about 14 inches of space when folded, except HD units whose seats do not fold [e7:openai:c1]. The Liberty brochure describes a 3-inch-wide rail, which may preserve more stairway passage than a wider rail [e7:openai:c2]. AmeriGlide states that the Liberty has obstacle sensors that stop the lift when something blocks the path, and its general stairlift information describes multiple pressure-sensitive footrest sensors [e7:openai:c4]. AmeriGlide markets straight stairlifts for relatively simple installation, provides installation instructions, and says homeowner installation commonly takes about 1–3 hours [e7:openai:c5]. AmeriGlide's general new-stairlift warranty states 30 days for batteries and two years for component parts and the drivetrain [e7:openai:c6]. AmeriGlide's current product listings show a published price of $2,595 plus shipping for the Liberty Stairlift and $2,249 plus shipping for the Rave 2 [e7:openai:c7].

Main limitations. AmeriGlide documentation directly identifies a folding-rail installation for the Rave 2, but the available Liberty brochure and installation material reviewed do not verify that the Liberty can be ordered with an optional folding rail [e7:openai:c3]. The exact Liberty folded depth and lowest-landing parked footprint remain unclear because the folded-space guidance comes from a general FAQ rather than a Liberty-specific dimensional drawing [e7:openai:c1]. Automatic footrest capability is not verified for the Liberty or Rave 2 [e7:openai:c4]. Armrest folding ease is unclear, with no Liberty-specific mechanism, force requirement, or user test evidence [e7:openai:c2]. Obstruction-sensor sensitivity is described qualitatively, without independent performance evidence [e7:openai:c4]. Warranty excludes labor, installation, service-call, travel, and related dealer charges, and shipping for warranty returns may be charged to the purchaser [e7:openai:c6]. Published prices exclude at least shipping and may exclude installation, options, taxes, and site work [e7:openai:c7].

Pricing or cost summary. AmeriGlide's current product listings show $2,595 plus shipping for the Liberty Stairlift and $2,249 plus shipping for the Rave 2 [e7:openai:c7]. Straight-stairlift installation is advertised as available for as low as $199, while AmeriGlide's FAQ separately states $550 in most cases, so the actual quote is configuration- and location-dependent [e7:openai:c7]. A public Rave 2 folding-rail add-on price of $1,595 plus shipping was found [e7:perplexity:c2]. One platform cites a Liberty base price of approximately $2,595 including basic installation and a Rave 2 base price of approximately $2,195–$2,425 [e7:google:3.2.1].

What the Cross-Platform Study Reveals About This Market

Questions This Section Answers

• What does a 7-platform AI consensus study reveal about folding stairlifts for shared household clearance?
• Why do folding stairlift specifications for shared stairways vary so much across AI platforms and dealers?

Three patterns dominate this market when seven platforms are asked the same question.

First, the shared-clearance problem is solved by options, not by base models. Across the top-ranked entities, the feature that actually clears the stairway — an automatic folding rail, a Slide Track, a hinged rail, or a power folding footrest — is consistently an option rather than standard equipment [e1:openai:c1][e3:openai:C2][e5:openai:c3][e6:openai:c3]. Buyers comparing base prices are therefore comparing configurations that do not yet solve their problem.

Second, published folded depth is a screening number, not a clearance guarantee. Every ranked entity publishes or is associated with a folded-depth figure between roughly 10.75 and 14.5 inches, yet multiple platforms state that the figure does not establish the remaining usable stair width in a specific home [e1:openai:c1][e3:openai:C1][e4:openai:c2][e5:openai:c1]. The gap between a product specification and an installed clearance is the single largest source of uncertainty in this study.

Third, the market splits cleanly between straight and curved stairways. Every ranked entity is a straight-run product. The supplied evidence repeatedly routes curved, multi-flight, or intermediate-landing stairways to separate models: Harmar Helix, Savaria Stairfriend 23, Handicare Freecurve and 2000, and Acorn 180 [e1:openai:c1][e3:openai:C6][e5:openai:c1][e6:openai:c2]. Buyers with curved stairways are outside the scope of this ranking entirely.

Where the AI Platforms Agreed

Questions This Section Answers

• Which folding stairlift features did all seven AI platforms agree matter most for shared household clearance?
• Did the AI platforms agree that the Harmar Pinnacle SL300 is the best folding stairlift for a shared stairway?

Agreement was strongest on the identity of the leader and on the shape of the problem.

• The Harmar Pinnacle SL300 was the consensus leader. Six of seven platforms named it, and every naming platform placed it first, producing an average listed position of 1.0 [e1:openai:c1][e1:anthropic:c1][e1:google:1.1.2][e1:grok:0][e1:perplexity:c1].
• Folding components are the core mechanism. Platforms consistently identified folding seats, armrests, footrests, and rails as the features that preserve stair access for other household members [e1:openai:c1][e2:openai:c2][e3:openai:C1][e4:openai:c1][e5:openai:c1][e6:openai:c4][e7:openai:c2].
• Obstruction sensors are standard or near-standard. Footrest or carriage obstruction sensing was identified across the ranked entities, with chassis sensors typically optional [e1:openai:c3][e2:openai:c2][e3:anthropic:c4][e4:openai:c3][e5:openai:c6][e6:openai:c5][e7:openai:c4].
• Straight-run limitation is universal. No platform suggested any ranked entity could serve a curved stairway [e1:openai:c1][e3:openai:C6][e5:openai:c1][e6:openai:c2].
• Dealer measurement is required. Platforms agreed that final clearance depends on site-specific geometry and must be confirmed by a dealer survey rather than from published specifications [e1:openai:c1][e3:openai:C1][e4:openai:c4][e5:openai:c1][e6:openai:c7][e7:openai:c5].

Where the AI Platforms Disagreed

Questions This Section Answers

• Why did AI platforms disagree about the fit ratings of folding stairlifts for shared household clearance?
• Which folding stairlift specifications conflicted across AI platforms, and what should a buyer verify as a result?

Disagreement clustered around fit ratings, model identity, and specific dimensions rather than around the ranking itself.

• Fit ratings diverged sharply. The same entity could be rated "strong" by one platform and "uncertain" by another. The Harmar Pinnacle SL300 drew ratings from strong to uncertain; the Bruno Elan SRE-3000 from strong to uncertain; the Savaria K2 from strong to mixed; the Stannah Siena from strong to mixed; the Handicare 1100 from strong to mixed; the Acorn 130 from good to uncertain; and the AmeriGlide Liberty from good to uncertain.
• Retrieval quality differed by platform. Kimi's retrieved results for the Harmar, Bruno, and AmeriGlide entities were entirely misaligned with the buyer need, returning UK house-clearance services rather than U.S. stairlift specifications [e1:kimi:ukhouseclearance-1][e2:kimi:house-clearance-context-1][e7:kimi:search_1]. Deepseek operated without search enabled, and its findings for the Harmar SL300 were correspondingly more cautious [e1:deepseek:c1].
• Model identity was contested. Kimi states the Bruno Elan SRE-3000 is not the current model recommended in the ranking stage and that the SRE-3050 successor is the relevant model [e2:kimi:bruno-models-unclear-1]. Deepseek evaluated the SRE-3050 rather than the SRE-3000 [e2:deepseek:bruno-elan]. The ranking-stage list also mixes SL300, SL600, and Helix variants for Harmar [e1:deepseek:c2].
• Dimensions conflicted. Harmar's folded width with rail appears as 13 inches and 13.5–13.6 inches across sources [e1:grok:4]. Stannah's straight folded depth appears as both 13.5 inches and 14.5 inches [e4:anthropic:c1][e4:google:1.1.1]. Savaria's V-seat folded width appears as both 11.25 inches and 12 inches [e3:anthropic:c1].

How Buyers Should Choose

Questions This Section Answers

• How should a buyer choose a folding stairlift for a shared stairway when published specifications are incomplete?
• What should a buyer check before choosing a folding stairlift for shared household clearance?

Choosing among these seven options is a measurement exercise before it is a product comparison. The following sequence follows directly from the supplied evidence.

1. Confirm the stairway is straight. Every ranked entity is a straight-run product. Curved, multi-flight, or intermediate-landing stairways require a different model entirely [e1:openai:c1][e3:openai:C6][e5:openai:c1][e6:openai:c2].
2. Decide whether the chair profile or the landing obstruction is the binding constraint. If the chair profile is binding, the Savaria K2's published 10.75-inch L-seat fold-up depth is the narrowest figure in this study [e3:openai:C1]. If the landing obstruction is binding, the Handicare 1100's Slide Track and the Harmar SL300's automatic folding rail are the documented configurations that address it [e5:openai:c3][e1:openai:c2].
3. Require a written, configuration-specific clearance measurement. Multiple platforms state that published folded-depth figures do not establish remaining usable stair width [e1:openai:c1][e3:openai:C1][e4:openai:c2][e5:openai:c1]. Ask the dealer to measure the narrowest point with the seat, armrests, footrest, and rail fully parked.
4. Confirm whether the folding rail and power footrest are included or optional. For the Harmar SL300, the Savaria K2, the Handicare 1100, and the Acorn 130, these are options rather than standard equipment [e1:openai:c1][e3:openai:C2][e5:openai:c3][e6:openai:c3].
5. Test the fold cycle in person with every household member who will use the stairs. Armrest folding force is undocumented for every ranked entity [e1:openai:c1][e3:openai:C1][e4:openai:c1][e5:openai:c1][e6:openai:c1][e7:openai:c2].

Methodology

This index was produced from a single standardized prompt sent once to each of seven included platforms on the authoritative run research date of 2026-09-27. The platforms were openai, anthropic, deepseek, grok, perplexity, kimi, and google. Each platform was asked to identify the best folding stairlifts for shared household clearance in the United States and to assess fit against eight category criteria: folded depth, folding rail availability, automatic footrest, armrest folding ease, obstruction sensor sensitivity, parked footprint, installation fit, and warranty coverage.

Ranking discovery and fit assessment were separate stages. An entity qualified for this index only if it was named by at least two platforms during ranking discovery. Thirteen unique entities were named; seven qualified. The final ranking order is based on platform mentions, then average listed position, then best listed position. The final ranking table is the sole authority for rank, platform mentions, platform share, average listed position, and best position.

Platform mentions count only ranking-discovery mentions. They do not count the number of platforms that later completed a fit assessment, and they are not a measure of product quality. All included platforms evaluated fit, but only some named each entity during ranking discovery.

Citations are platform-reported evidence, not independently verified facts. The supplied URLs were collected from platform responses and were not independently validated by the writer stage. Company-owned citations materially outnumber independent citations in several entity bundles, so company claims should not be described as independently verified. Where a platform operated without search enabled, its claims require explicit verification before being treated as current facts.

Methodology Limitations

Several limitations materially affect how this index should be used.

• One prompt, one run. The study used one standardized prompt sent once to each included platform. AI answers can vary by date, wording, location, account state, model, interface, browsing configuration, and the sources retrieved. A repeat run could produce different names and different orderings.
• Platform-reported dates differ from the run date. Platform-reported research dates ranged from 2024-12-20 to 2026-09-27. These are provenance metadata and do not independently prove freshness. The authoritative study date is 2026-09-27.
• Retrieval quality varied. One platform's retrieved results for several entities were entirely misaligned with the buyer need, returning UK house-clearance services rather than U.S. stairlift specifications. Another platform operated without search enabled. Missing research is not evidence of disagreement or of absence.
• Company-owned sources dominate. In several entity bundles, company-owned citations materially outnumber independent citations. Company claims are not independently verified.
• Model identity is unresolved for some entities. The ranking-stage list mixes model variants for Harmar and Bruno, and one platform states the Bruno Elan SRE-3000 may be superseded by the SRE-3050. Features named for one variant may not belong to another.
• Official-site retrieval failed for some entities. The Savaria site returned an HTTP 403, the Handicare official URL was unavailable, and the Bruno official page returned no excerpts. The source evidence notes that unverified reported-domain evidences were used and remain unverified.
• Pricing is dealer-quoted and inconsistent. No ranked entity publishes a single authoritative U.S. installed price. All price figures in this index are platform-reported or dealer-reported and should be treated as estimates.
• Clearance-critical specifications are largely unpublished. Measured folded depth, parked footprint, armrest folding force, and obstruction-sensor sensitivity are not published for any ranked entity in a form that guarantees installed clearance.
• Platform recommendations are market intelligence. They are not independent customer reviews and are not proof of product quality.

Final Verdict

The Harmar Pinnacle SL300 Stairlift is the consensus leader for shared household clearance in this 7-platform study, named by six platforms and placed first by every platform that named it. Its compact folded profile and optional automatic folding rail are the features most directly aligned with keeping a shared stairway usable, and its lubrication-free drive reduces grease on shared steps.

The strongest alternatives serve distinct buyer needs rather than displacing the leader. The Bruno Elan SRE-3000 is the best-matched option for buyers weighting U.S. dealer support and indoor warranty language, provided the exact model number and configuration are confirmed in writing. The Savaria K2 carries the narrowest published folded chair depth at 10.75 inches with the L seat. The Stannah Siena is the best-matched option for buyers who want a published U.S. starting price and a powered footrest. The Handicare 1100 is the best-matched option when the landing obstruction, rather than the chair profile, is the binding constraint. The Acorn 130 Straight Stairlift is the best-matched option for a low-cost manual hinged rail. The AmeriGlide Liberty Stairlift is the best-matched option for low published equipment pricing, with the caveat that a Liberty-compatible folding rail is not verified.

No buyer should treat this ranking as a substitute for a dealer measurement. The decisive clearance facts are configuration-specific and largely unpublished, and the difference between a published folded-depth figure and an installed clearance is the largest single source of uncertainty in the evidence.