There perhaps is nothing more uncomfortable than being in a car on a hot summer day with warm air blowing out of the vents when the air-conditioning system is turned on. This could be occurring ...

Automotive air conditioning systems have seen some changes over the years, including the switch from using R12 to R134a. Here ...

Last month’s column analyzed a closed-door, medium-temperature refrigeration system that incorporated a liquid high-side receiver and a thermostatic expansion valve (TXV) as the metering device. The ...

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 ...