Last updated: July 2026 — every price on this page was checked against the named UK sources on 8 July 2026.
A car air con regas costs £65–£90 for older cars (R134a gas) and £130–£160 for newer cars (R1234yf gas) — Kwik Fit charges from £74.95/£139.95 and Halfords £74.99/£139.99 (2026 prices).
The single biggest factor is which gas your car takes — the newer R1234yf refrigerant roughly doubles the price everywhere.
Air con regas prices compared
| Provider / source | R134a (older cars) | R1234yf (newer cars) |
|---|---|---|
| Kwik Fit | from £74.95 | from £139.95 |
| Halfords | £74.99 | £139.99 |
| ClickMechanic | £89.99 | £159.99 |
| Checkatrade (typical) | ~£65 | ~£130 |
| Bumper (range) | £50–£70 | £70–£100 |
For single overall figures: the FixMyCar marketplace average is £81.72, Checkatrade’s typical all-in figure is £100, and the RAC bands a standard regas at £50–£150. Independent garages tend to undercut the fast-fit chains slightly on R134a and match them on R1234yf, where the gas itself is the cost.
Which gas does your car take?
Broadly, older cars run R134a and newer cars run R1234yf — the changeover happened as emissions rules phased R134a out of new models. The sticker under the bonnet (or the handbook) states yours; any garage will check in seconds. The price difference is purely the refrigerant: R1234yf is far more expensive per kilogram, which is why every provider’s price roughly doubles.
Why air con needs regassing at all
Air con systems lose a little refrigerant naturally through seals and joints even with no fault present — which is why every provider recommends a 1–2 year cycle rather than waiting for warm air. Less gas also means the compressor works harder and the system lubricates itself less effectively, so a timely £75 regas protects components that cost many times more. If the air went warm suddenly rather than gradually, suspect a leak instead — regassing a leaking system just pours money out of the hole.
What a regas actually includes
A proper regas is not just a top-up: the old refrigerant is recovered, the system is vacuum-tested for leaks, then refilled to the correct weight. Kwik Fit, Checkatrade and the RAC all describe the vacuum test as part of the standard service; Halfords includes a leak check in its service description. One caveat from Kwik Fit: if your system arrives empty, a separate pressure leak test (£19.95 at Kwik Fit) may be needed first.
What affects the price?
- Gas type — R1234yf roughly doubles the bill at every provider.
- Leaks — a leak test and repair come before a regas makes sense; budget the £19.95-style test if the system is empty.
- Chain vs independent — Checkatrade’s £65 typical R134a figure undercuts the ~£75 chain prices; labour runs £30–£50/hour.
- Extras — antibacterial cleans and deodorising treatments are optional add-ons, not part of the regas.
Frequently asked questions
How often should I regas my air con?
Every two years is the standard recommendation — Kwik Fit, Halfords, Checkatrade and the RAC all advise a 1–2 year cycle (Bumper says 2–3). Air con loses a little gas naturally even without a fault.
My air con is blowing warm — is a regas the fix?
Usually, if the loss is gradual. If it stopped working suddenly or a regas does not last, there is likely a leak or component fault — ClickMechanic notes that needs separate diagnosis before more gas goes in.
Does a regas include a leak check?
A vacuum test is part of the standard procedure at Kwik Fit and per Checkatrade and the RAC. A full pressure leak test on an empty system can be a separate charge (£19.95 at Kwik Fit).
Why was I quoted £140 when my neighbour paid £70?
Almost certainly the gas: newer cars take R1234yf, which costs roughly double R134a everywhere. Same service, different refrigerant.
Related guides
- All air conditioning cost guides
- Vauxhall Corsa alternator replacement cost
- Car diagnostic test cost
Sources: Kwik Fit air conditioning, Halfords regas service, FixMyCar regas guide, Checkatrade, the RAC, ClickMechanic and Bumper, all checked 8 July 2026. See how we verify prices.