Before calling in an HVAC tech, try these troubleshooting tips. You may be able to fix the issue yourself and save some money along the way. When your HVAC system stops working, your first ...

A clamp meter is a great tool for troubleshooting electrical motor and compressor problems. Meters designed to accurately measure both AC voltage and AC current are especially useful.

Members of The NEWS’ trainer panel examined compressor valves and determined the best methods for maintaining valves, diagnosing faulty ones, and implementing proper troubleshooting techniques when ...

Here are the most common problems that crop up with window and central air conditioners—many you can fix yourself—plus CR's top-rated window ACs.