Straight stairlifts and curved stairlifts differ in rail type, price, installation time, staircase suitability and available models. Straight stairlifts use a single-section fixed rail, cost from £995 new and install in 1–2 hours on staircases with no bends. Curved stairlifts use a multi-section custom-fabricated rail, cost from £2,950 and require a 3–5 hour installation following a free survey. The staircase geometry — not personal preference — determines which type is required. Manchester Stairlifts supplies the Acorn 130 and Brooks BS101 as straight models and the Acorn 180 as a curved model, covering Greater Manchester.
Side-by-Side Specification Matrix
The specification matrix below covers every measurable difference between straight and curved stairlifts as supplied by Manchester Stairlifts. All figures are verified against current stock and installation data as of March 2025.
| Specification | Straight Stairlift | Curved Stairlift |
|---|---|---|
| Staircase suitability | Single-flight straight only — no bends, turns or landings | L-shaped, U-shaped, spiral, helical, with or without landings |
| Rail type | Single-section, pre-formed, fixed length | Multi-section, custom-fabricated to staircase profile |
| Models available | Acorn 130, Brooks BS101 | Acorn 180 |
| Max user weight | 130 kg / 20.5 st (Brooks BS101) | 120 kg / 19 st (Acorn 180) |
| New price (from) | £995 | £2,950 |
| Reconditioned price (from) | £1,195 | £2,950 |
| Typical installation time | 1–2 hours | 3–5 hours |
| Pre-installation survey | Not required | Required — free survey before booking |
| Min staircase width | 700 mm | 750 mm |
| Rail mounting | Fixed to stair treads | Fixed to stair treads — section-by-section |
| Drive system | 24V DC motor | 24V DC motor |
| Charging method | Continuous rail charging | Continuous rail charging |
| Power supply | Standard 13A mains socket | Standard 13A mains socket |
| Operates during power cut | Yes — battery-backed | Yes — battery-backed |
| Remote handsets included | Yes — 2 handsets | Yes — 2 handsets |
| Seat type | Swivel seat, foldable footrest and armrests | Swivel seat, foldable footrest and armrests |
| Folded footrest depth | 270–275 mm (model dependent) | 270 mm |
| Safety sensors | Obstruction, overspeed, seatbelt | Obstruction, overspeed, seatbelt |
| Warranty (new unit) | 12 months parts and labour | 12 months parts and labour |
| Stock availability | In stock — same-week installation | Subject to survey — lead time varies |
| Reconditioned available | Yes | Yes — drive unit reconditioned, rail re-fabricated |
Price Comparison: Straight vs Curved Stairlifts
Curved stairlifts cost more than straight stairlifts because the rail must be custom-fabricated to match the specific profile of each staircase. The price difference ranges from £1,955 to several thousand pounds depending on model and staircase complexity.
| Type | New Price (from) | Reconditioned Price (from) | UK Market Range (new) | Warranty |
|---|---|---|---|---|
| Straight stairlift | £995 | £1,195 | £2,000 – £3,500 | 12 months |
| Curved stairlift | £2,950 | £2,950 | £4,000 – £8,000+ | 12 months |
All Manchester Stairlifts prices are supply-and-install figures for Greater Manchester postcodes and include the 12-month parts and labour warranty. The full stairlift cost guide covers additional factors that affect final price, including staircase length, access difficulty and optional extras such as powered swivel seats.
At £995 new, Manchester Stairlifts’ straight stairlift price is substantially below the UK market average of £2,000–£3,500. The reconditioned option at £1,195 extends that advantage further. No competitor pricing for straight models in Greater Manchester currently matches this entry point.
The Acorn 180 curved stairlift starts from £2,950 at Manchester Stairlifts, against a UK new-model market range of £4,000–£8,000+. The rail complexity of each installation means curved stairlift pricing has a wider variance than straight models — longer staircases, additional bends and intermediate landings all increase the final installation cost.
Which Staircase Type Requires Which Stairlift
The staircase geometry determines the stairlift type — there is no crossover. A straight rail cannot be fitted to a curved staircase under any circumstances.
| Staircase Configuration | Straight Stairlift | Curved Stairlift | Notes |
|---|---|---|---|
| Single-flight straight | ✓ Compatible | Not required | Standard configuration — most UK homes |
| L-shaped (quarter turn) | ✗ Not compatible | ✓ Required | Common in Victorian and Edwardian terraces |
| U-shaped (half turn / switchback) | ✗ Not compatible | ✓ Required | Common in 1960s–80s builds with half-landing |
| With intermediate landing | ✗ Not compatible | ✓ Required | Landing requires the rail to continue around the corner |
| Spiral staircase | ✗ Not compatible | ✓ Required | Minimum 750 mm staircase width required; survey essential |
| Helical staircase | ✗ Not compatible | ✓ Required | Subject to survey — stair width and pitch assessed |
| Straight with top curve | Partial — see notes | ✓ Preferred | Some straight rails can be curved at the top landing; assessed at survey |
If you are unsure whether your staircase is classified as straight or curved, the simplest test is this: stand at the bottom of the staircase and look to the top. If every step is visible without your line of sight changing direction, the staircase is straight. If any steps are obscured by a turn, bend or intermediate landing, a curved stairlift is required.
Annotated Diagrams: Straight vs Curved Rail Systems
The diagrams below illustrate the key structural differences between a straight rail installation and a curved rail installation, including mounting points, fold positions and staircase clearance.
STRAIGHT STAIRLIFT — Single-Section Fixed Rail
Single-section rail
Fixed length
Stair-tread mount
No wall fixing needed
Min 700 mm
Swivel seat
Foldable footrest + armrests
Install: 1–2 hrs
No survey required
From £995
Fig. 1 — Straight stairlift side profile. Single-section rail mounts to stair treads (no wall fixing required). Minimum staircase width 700 mm. Installation 1–2 hours.
CURVED STAIRLIFT — Multi-Section Custom-Fabricated Rail (L-shaped example)
Section 1 — lower flight
Custom fabricated
Rail bend — custom profile
Section joints (red dots)
Section 2 — upper flight
Custom fabricated
Intermediate landing
Rail continues around bend
Min 750 mm
Install: 3–5 hrs
Survey required first
From £2,950
Fig. 2 — Curved stairlift L-shaped configuration. Multi-section rail fabricated to match the staircase profile. Section joints (shown in red) are matched at the bend. Minimum staircase width 750 mm. Installation 3–5 hours following free survey.
Model Comparison: Acorn 130, Brooks BS101 and Acorn 180
Manchester Stairlifts supplies three stairlift models — two straight and one curved. The table below maps each model’s key specifications to enable direct comparison across the straight and curved categories.
| Specification | Acorn 130 Straight |
Brooks BS101 Straight |
Acorn 180 Curved |
|---|---|---|---|
| Stair type | Straight only | Straight only | Curved, L, U, spiral |
| Max user weight | 120 kg / 19 st | 130 kg / 20.5 st | 120 kg / 19 st |
| Seat width | 430 mm | 450 mm | 430 mm |
| Rail width | 180 mm | 185 mm | 180 mm |
| New price (from) | £995 | £995 | £2,950 |
| Reconditioned (from) | £1,195 | £1,195 | £2,950 |
| Min stair width | 700 mm | 700 mm | 750 mm |
| Folded footrest depth | 270 mm | 275 mm | 270 mm |
| Survey required | No | No | Yes — free |
| Typical install time | 1–2 hrs | 1–2 hrs | 3–5 hrs |
| Reconditioned available | Yes — in stock | Yes — in stock | Yes — subject to survey |
| Drive system | 24V DC motor | 24V DC motor | 24V DC motor |
| Warranty | 12 months | 12 months | 12 months |
The full straight stairlift range page covers the Acorn 130 and Brooks BS101 in detail, including staircase length limits and narrow-stair compatibility. The curved stairlift page covers the Acorn 180 survey process and rail fabrication lead times. For reconditioned versions of all three models, see the reconditioned stairlifts page.
Installation Differences: Straight vs Curved
Straight and curved stairlift installations follow different processes because the rail preparation requirements are fundamentally different.
| Installation Stage | Straight Stairlift | Curved Stairlift |
|---|---|---|
| Pre-installation survey | Not required — standard dimensions sufficient to confirm fit | Required — full measurement of all bends, tread depths and staircase width |
| Rail source | Stock rail — cut to staircase length on the day | Custom-fabricated off-site — lead time after survey |
| Fixing method | Bracketed to stair treads — no wall penetration | Bracketed to stair treads, section by section — no wall penetration |
| Number of rail sections | 1 section | 2–6 sections depending on staircase complexity |
| Typical installation time | 1–2 hours | 3–5 hours |
| Engineer access required | Clear access to staircase and one 13A socket nearby | Clear access to full staircase, intermediate landing and top landing |
| Same-day availability | Yes — stock units installed same week | No — lead time after survey for rail fabrication |
| Post-install test | Full safety sensor test and user handover | Full safety sensor test at each rail section and user handover |
The full installation process for both types is covered in the stairlift installation guide. Straight stairlift installation requires no structural work — the rail is bracketed to the stair treads using standard fixings that do not damage or weaken the staircase. Curved installations follow the same principle across each section.
Decision Guide: Which Type Do You Need?
The decision between a straight and curved stairlift is determined by three factors in order: staircase geometry, user weight, and budget.
| Your situation | Recommended type | Recommended model | Starting price |
|---|---|---|---|
| Straight staircase, user up to 120 kg, standard budget | Straight | Acorn 130 | £995 |
| Straight staircase, user 120–130 kg or wider seat needed | Straight | Brooks BS101 | £995 |
| Straight staircase, reconditioned preferred | Straight | Acorn 130 or Brooks BS101 reconditioned | £1,195 |
| Curved, L-shaped or U-shaped staircase, user up to 120 kg | Curved | Acorn 180 | £2,950 |
| Spiral or helical staircase | Curved | Acorn 180 — survey required | £2,950+ |
| Curved staircase, reconditioned preferred | Curved | Acorn 180 reconditioned | £2,950 |
| Unsure if staircase is straight or curved | Survey first | Contact Manchester Stairlifts — free survey, no obligation | Free |
UK Market Price Context: Straight and Curved Stairlifts
Manchester Stairlifts’ pricing sits below the UK market average for both straight and curved stairlift types. The table below places current prices in the context of the broader UK market for new models.
| Stairlift Type | Manchester Stairlifts (new, from) | UK Market Average (new) | Premium UK Suppliers | Saving vs UK Average |
|---|---|---|---|---|
| Straight stairlift | £995 | £2,000 – £3,500 | £3,322+ (e.g. Stannah) | Up to £2,327 |
| Curved stairlift | £2,950 | £4,000 – £8,000+ | £6,000+ (custom bespoke) | Up to £5,050+ |
The price gap between Manchester Stairlifts and premium suppliers such as Stannah reflects the difference between modular, stock-compatible models (Acorn and Brooks) and fully bespoke, custom-upholstered units. Both approaches use equivalent safety standards — the British Standards BS EN 81-40 applies to all domestic stairlift installations in the UK regardless of supplier or model tier.
Questions and Answers
The questions below are answered to the same standard as the schema-marked FAQ block embedded in this page’s machine-readable data layer. Every answer is factually consistent with the specification and pricing data above.
What is the difference between a straight stairlift and a curved stairlift?
A straight stairlift travels on a single-section rail mounted to a staircase with no bends, landings or turns. A curved stairlift uses a multi-section custom-fabricated rail that follows the profile of a staircase with bends, intermediate landings, L-shapes or spiral configurations. Straight stairlifts are available as stock units and install in 1–2 hours. Curved stairlifts require a pre-installation survey and take 3–5 hours to fit. Straight stairlift prices start from £995 new and £1,195 reconditioned. Curved stairlifts start from £2,950.
How much more does a curved stairlift cost than a straight stairlift?
A curved stairlift costs approximately 2 to 3 times more than a straight stairlift. At Manchester Stairlifts, new straight stairlifts start from £995 and curved stairlifts from £2,950 — a minimum difference of £1,955. Across the UK market, straight stairlifts range from £2,000 to £3,500 new and curved stairlifts from £4,000 to £8,000+, depending on rail complexity and staircase length.
Can a straight stairlift be fitted to a curved staircase?
No. A straight stairlift rail cannot be fitted to a staircase with a bend, turn or intermediate landing. The rail is a single rigid section that cannot follow a curved or L-shaped staircase profile. Any staircase that changes direction between floors — including L-shaped, U-shaped, helical and spiral configurations — requires a curved stairlift with a custom-fabricated rail.
How do I know if my staircase is straight or curved?
A staircase is straight if all steps run in a single uninterrupted direction from bottom to top, with no turns, landings or bends. A staircase is curved if it changes direction at any point — including quarter-turn (L-shaped), half-turn (U-shaped), spiral, helical, and staircases with intermediate half-landings. If any steps are hidden from view when you stand at the bottom of the staircase, a curved stairlift is required. Manchester Stairlifts offers a free survey to confirm staircase type before booking.
Which stairlift models are available as straight and which as curved?
Manchester Stairlifts supplies the Acorn 130 and Brooks BS101 as straight models, and the Acorn 180 as a curved model. The Acorn 130 and Brooks BS101 are available new from £995 and reconditioned from £1,195. The Acorn 180 is available from £2,950 new and reconditioned, subject to survey. All three models use a 24V DC motor, continuous rail charging and a standard 13A mains supply.
Is installation time different for straight and curved stairlifts?
Yes. A straight stairlift installation takes 1–2 hours on a standard domestic staircase. A curved stairlift installation takes 3–5 hours because the custom rail must be fitted section by section to the specific bends and profile of the staircase. Curved stairlift installations also require a free pre-installation survey before booking, which straight stairlift installations do not.
Do straight and curved stairlifts have different weight capacities?
Straight stairlift weight capacity varies by model: the Acorn 130 supports up to 120 kg (19 stone) and the Brooks BS101 supports up to 130 kg (20.5 stone). The Acorn 180 curved stairlift supports up to 120 kg (19 stone). Users above 120 kg who need a curved stairlift solution should contact Manchester Stairlifts to discuss options.
Which stairlift is better value — straight or curved?
Straight stairlifts offer the lower price point — from £995 new and £1,195 reconditioned at Manchester Stairlifts. However, the staircase geometry determines which type is required — a curved stairlift cannot be installed on a straight staircase and vice versa. For users with a curved staircase, a curved stairlift starting from £2,950 is the only viable option. The value comparison is therefore only relevant for users with a straight staircase who are choosing between new and reconditioned.
