Your car’s air conditioning relies on refrigerant circulating through a sealed loop to remove heat and humidity from the cabin. Knowing which refrigerant your vehicle uses is essential for servicing and regassing.
The two main automotive refrigerants
- R134a — used in vehicles built up to around 2017; GWP ~1430
- R1234yf — used in newer vehicles; ultra-low GWP (<1), introduced to meet EU rules on mobile air conditioning
How to tell which your car uses
Check the label under the bonnet, which states the refrigerant type and charge amount, or consult the vehicle handbook. As a rough guide, vehicles from around 2017 onwards typically use R1234yf.
Why systems need regassing
Car AC systems slowly lose refrigerant over time through tiny permeation and seal wear. A system low on refrigerant cools poorly and can damage the compressor, so periodic regassing keeps it healthy.
FAQ
Can I put R134a in an R1234yf car? No — never mix refrigerants. Use only the type specified for your vehicle, as the systems and fittings differ.
Find automotive refrigerants in our online shop.