What air conditioning regas involves
Air conditioning systems lose a small amount of refrigerant every year — it's normal, and it's why air con that was ice cold when the car was new gradually becomes merely cool. A regas evacuates what's left, checks the system holds a vacuum, and recharges it with the correct weight of refrigerant and oil for your vehicle. Air con isn't just for summer either: it's the fastest way to demist a windscreen in winter.
Signs your air con needs a regas
- The air con blows cool rather than properly cold
- It takes far longer than it used to before you feel any cold air
- The windscreen takes ages to demist
- A musty or damp smell when you first turn the fan on
- The air con compressor cuts in and out, or doesn't engage at all
- It's been two years or more since the last regas
What we do at the workshop
- 1Identify which refrigerant your vehicle uses and connect the appropriate equipment
- 2Recover and weigh the existing refrigerant so we can see how much has been lost
- 3Vacuum the system and hold it to check the system is sealed
- 4Recharge with the correct weight of refrigerant and lubricant for your car
- 5Run the system and measure the vent temperature to confirm performance
- 6Tell you if the system won't hold vacuum, which points to a leak that needs finding and fixing first

How long it takes
A regas typically takes around 45–60 minutes.
Air conditioning regas FAQs
Straight answers to what people ask us most about this job.
Do you do air con regas in Chertsey?
How often should air con be regassed?
Why is my air con not cold even after a regas?
Should I use my air con in winter?
More questions? Read our full FAQs or get in touch.
Often done at the same time
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Interim and full servicing to keep your car reliable, with tyres and repairs handled in the same visit.
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Air conditioning regas near you
Drivers come to us for air conditioning regas from across north-west Surrey, including Chertsey, Addlestone, New Haw, Ottershaw, Lyne, Thorpe and more. See all the areas we cover.
