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2026 UK Air Con Regas Costs

The cost of an air con regas depends mainly on which refrigerant gas your car uses, with the newer R1234YF gas usually costing more to regas than the older R134A, and on the garage you choose.

Data taken from bookings made at live garages on BookMyGarage.com in the last 12 months. Last updated October 6th 2026.

Which Air Con Gas Does My Car Use?

Most cars made before 2014 use R134A gas, while every car with air con manufactured since 1st January 2017 uses the newer R1234YF gas. Cars built between 2014 and 2016 could use either, as manufacturers switched over gradually.

The two gases use different filling ports, so a garage can’t fill your air con with the wrong one. A small number of electric cars use a third gas, R744.

What Happens During an Air Con Regas?

During an air con re-gas, a technician removes the old refrigerant gas in your air con system and replaces it with fresh gas. This keeps your cabin cool and comfortable during hot weather.

The old gas and oil are removed first, then the system is refilled with the correct amount of new refrigerant and lubricant for your car. A vacuum test is also carried out to check for any cracks or damage in your air conditioning system that could let the gas leak out.

How Long Does an Air Con Regas Take?

A regas should take no longer than an hour.

What If My Air Con Has a Leak?

If your system has a leak, the new gas will simply escape again, so the leak needs to be repaired before a regas will make a lasting difference.

How Often Should I Regas My Car's Air Con?

As a general guide, it’s worth having your air con regassed every two years or so. Many drivers wait until it stops blowing cold, but air con that isn’t working properly also makes it harder to demist your windows in winter and can make the engine work harder, using more fuel in the process.

When Should I Book an Air Con Regas?

If you’ve noticed any of the following symptoms, it’s time to book an air con regas:

• Warm air coming from the vents

• Air coming from the vents is no different when AC is off

• The windows take longer to demist

• The vents smell musty

If you don’t have time to take your car to a physical garage, why not book a mobile air con regas for further convenience instead?

Why Book with BookMyGarage?

• BMG-Verified Garages Across the UK. Local businesses that offer great value and consistently meet service standards. Look for the BMG-Verified badge to find the garages we’ve ensured meet our high standards for customer service, ratings and reliability.

• We Show the Full Picture. All up front: prices, reviews, availability and distance, so you can choose the right garage based on what matters most to you.

• Real Reviews. Genuine, verified feedback from drivers like you. Every review helps you book with confidence.

• No Upfront Payment. We won’t ask for any payment details when you book. Pay the garage directly once the work’s complete.*

• Compare & Book in Seconds. See your options side by side and choose the right garage for you. No jargon. No stress. No surprises.

• Support Local Garages. We connect drivers with quality local businesses that keep communities moving. 

*some mobile technicians (that come out to you) may require an upfront payment or commitment, please check this with them first.

These are just some of the reasons to choose BookMyGarage - enter your reg and postcode to see how we can help you make a confident, informed choice when booking your air con regas now.

If it's been a couple of years since your last regas, or your air con isn't as cold as it used to be, now's a good time to get it sorted. We're here to make things simple and stress-free – so you can book with confidence and look forward to the results.