Office Chair Gas Lifts and Gas Cylinders
A gas lift that won't stay up is the most common reason a good chair gets binned, yet the part costs a fraction of a new chair, and we fit these every week.
Which gas lift do I need?
| Chair | Part | Price | Delivery |
|---|---|---|---|
| Herman Miller Aeron (Classic and Remastered), sizes B and C | Aeron Gas Lift, Extended | £65 | UK delivery |
| Herman Miller Mirra 1 | Mirra 1 Gas Lift | £65 | UK delivery |
These are the two gas lifts we stock. For other chairs, send us the make, model and a photo of the cylinder at info@londonchairrepairs.co.uk and we'll tell you what fits.
Aeron Gas Lift / Pneumatic Cylinder, Extended
Fits: Aeron Classic & Remastered, sizes B/C
Extended-height model, stops the slow sink, your chair holds its height again.
£65
Mirra 1 Gas Lift / Pneumatic Cylinder
Fits: Herman Miller Mirra 1
Stops the slow sink, your chair holds its height again.
£65
Is it definitely the gas lift?
- The seat slowly sinks under your weight.
- The seat won't rise when you pull the height lever.
- The seat drops to the bottom as soon as you sit down.
- You hear a hiss from under the seat.
For the full diagnosis, read why office chairs keep sinking.
Fitting it
Fitting a gas lift takes about fifteen minutes with a rubber mallet. The step-by-step is in our how to replace an office chair gas lift guide.
Would rather not? We fit gas lifts across London, usually in one visit.
Frequently asked questions
Not sure which part you need?
Send us a photo of your chair and its under-seat label, we'll tell you the exact part, free, before you spend anything.