If you’re like most drivers, you probably take your car’s ac system for granted. But don’t forget to check it regularly – especially if you live in a hot climate – because a broken or malfunctioning ac system can really suck the life out of your car. Here’s how to pressure test your car’s ac system:

  1. Park your car in a cool, shady spot and turn off all the lights.
  2. Turn on the fan in your car and open all the windows.
  3. Put a thermometer in the vent near the driver’s seat and wait 10 minutes. If the thermometer reads above 80 degrees Fahrenheit, your ac system is working properly; if it reads below 80 degrees Fahrenheit, there may be a problem with your AC unit and you’ll need to replace it. ..