Maintenance & safety
Essential Stairlift Safety Features & British Safety Standards (BS EN 81-40)
Stairlifts sold in the UK should be designed to BS EN 81-40, the standard for stairlifts and inclined platform lifts for people with impaired mobility. All modern domestic models include a core set of safety features; understanding them helps you compare quotes and use the lift safely.
Last reviewed:
Core safety features
| Feature | What it does |
|---|---|
| Obstruction sensors | Pads on the footrest and carriage stop the lift if they touch something |
| Seat belt | Retractable lap belt; some lifts will not move until fastened |
| Harness option | Upper-body or five-point harness for users with poor trunk control |
| Key switch | Isolates the lift to prevent unauthorised use, e.g. by children |
| Overspeed governor | Brings the carriage to a stop if it travels faster than it should |
| Swivel interlock | Prevents travel unless the seat is locked in the riding position |
| Battery backup | Lets the lift keep working during a power cut |
| Soft start and stop | Gradual acceleration and braking for a smooth ride |
| Constant-pressure controls | Lift only moves while the control is held |
About BS EN 81-40
BS EN 81-40 sets out safety requirements for the design, construction and installation of stairlifts. Ask any installer to confirm in writing that the model quoted conforms to it and carries UKCA or CE marking as appropriate.
A properly installed and regularly serviced lift is very safe, but no feature replaces sensible use: keep the stairs clear, always use the belt, and wait for the lift to stop fully before getting off.
Choosing features for specific needs
- Poor balance or leg weakness: powered swivel and powered footrest.
- Higher body weight: a heavy-duty stairlift.
- Grandchildren visiting: use the key switch.
- Cognitive impairment: discuss supervision and harness options with an OT.
Read the buying guide for a full step-by-step approach.
Ready to take the next step?
Our buying guide walks you through choosing a stairlift, checking funding, comparing installers and avoiding pressure selling.