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.

There are several HVAC issues that you can fix yourself. If your system isn’t working as expected, your first order of business should be checking your air filter and replacing it if necessary. If you ...

When your HVAC system was new, it was designed to keep the indoor environment comfortable, functional, and safe. Over time, that system can drift out of alignment, leading to wasted resources, ...

A variable frequency drive (VFD) fails to vary the discharge-air fan speed. A motor overheats and fails prematurely. Programmable controls that generally operate without issue suddenly experience ...

Be careful with single-phase motors, as most single-phase motors have components to help them start or continue to run ...

Like any appliance, air conditioners need a little TLC to deliver optimal performance. And it’s the ACs that haven’t been kept in top-notch condition that tend to struggle most. You don’t need to lose ...