Office Chair Gas Lift Replacement in London
If your chair sinks, tilts, or won't hold its height, it's almost always one small worn part, not a reason to spend £1,000+ on a new one.
The problem
It starts small, you sit down and the chair drops an inch. Then you're propping it back up with the lever three times a day, or sitting on a cushion to get back to desk height. By the time it's this annoying, most people start pricing a new chair, because nobody's told them what's actually wrong.
The real cause
A sinking chair almost always means the gas lift's internal seal has worn out (the same way a tyre wears down over years of use. It isn't a fault. It's a part reaching the end of a normal lifespan, usually five to eight years in. And because most office chairs in a fit-out are bought at the same time, when one goes, the others in the room are usually close behind. The furniture industry's answer to a sinking chair is a new chair) because there's more margin in a new chair than a replacement part. Nobody on that side of the industry has a reason to mention the seal.
Read the guide: is my office chair worth repairing?
The fix: our One-Visit Repair System
We identify your chair's make and model before we arrive, bring the correctly sized replacement gas lift with us, and swap it on-site, most jobs take 20–30 minutes, start to finish, with no need to send the chair away.
See The Free 10-Point Chair Audit
Repair vs. replace
New comparable chair
£700–£1,400+
Gas lift replacement
Fixed quote, no surprises.
Why people trust us
Rated 5.0 on Google. Genuine, authorised parts on every repair. And one straight promise instead of a statistic: if the fix can't be completed at your desk on the first visit, we take the chair to our workshop, finish it properly, and return it, you're never left with a half-done repair.
What happens next
- 1Book online or by phone
- 2An engineer visits at a time that suits you
- 3Gas lift swapped and tested in 20–30 minutes
- 4Chair back in use the same day
From recent jobs
Questions we get asked
Will the replacement match my chair's height and model?
Yes, we confirm your chair's make and model before the visit and bring the correct-sized lift, so the height and travel match what you had.
Why does my chair keep sinking even after I adjust the lever?
That's the clearest sign the gas lift itself has failed rather than the lever mechanism, the seal inside no longer holds pressure, so no amount of adjusting fixes it.
Is this the same as a hydraulic or pneumatic lift?
Yes, 'gas lift', 'pneumatic lift' and 'hydraulic lift' all refer to the same cylinder. We service all three types.
How much does a gas lift replacement cost?
It depends on your chair's make and model, parts vary. Tell us what you have and we'll give you a fixed price before any work starts, so there's never a surprise on the invoice.
Book your gas lift replacement
Tell us the make, model and what the chair is doing. We'll give you a fixed per-chair quote agreed before any work starts.
Other repairs we do
- Castor replacement
- Tilt mechanism repair
- Armrest repair
- Upholstery & mesh repair
- Herman Miller repair
- Aeron chair repair
- Humanscale repair
- Steelcase repair
- Eames chair repair
- HAG Capisco repair
See all office chair servicing and repairs · Office chair repairs for London businesses
Independent repair specialists, not affiliated with or endorsed by any chair manufacturer.