Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Over time, a car's air conditioning system will begin be less and less effective, ...

Q: A few years ago, I had the factory air conditioning on my 1970 Oldsmobile converted from Freon R12 to R-134a. This summer, the air conditioner only blew warm air. Can I convert back to Freon or do ...

The physics behind automotive air conditioning is simple heat transfer, yet a muscle car's A/C system can be baffling to troubleshoot. Now that the warm months are just around the corner, we offer ...

EPA has again revised standards for refrigerant used in vehicles. R-12 refrigerant (aka “Freon”) was the go-to coolant for more than 50 years. Then it was discovered that chlorine atoms in escaped ...

A nonflammable, non-ozone depletion HFC refrigerant, R-134a replaces the CFC refrigerant R-12. It can be used in refrigeration and freezer equipment; centrifugal chillers; and semi-hermetic, ...

The heart of a vehicle’s A/C system is the compressor that’s connected to the engine by a clutch, which is triggered by a pressure switch located on the accumulator (in our case), and the A/C button ...