Using dry nitrogen to pressure test a system is a very effective method of verifying a system is leak-free. In fact, I believe it is more reliable than using a standing vacuum test typically performed ...

If your car's air conditioner blew ice-cold air last year but barely cools now, chances are it lost some refrigerant over the winter. That happens in older vehicles when the aging seals contract and ...

If your car AC isn’t cooling like its usual frosty self—or worse, if your car AC is blowing hot air—the chances are pretty good that your AC system is probably still working. It just needs to be ...