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.

This comprehensive guide covers exactly how much it costs to repair an air conditioner to keep yours in top shape.

Do you always have a stuffy nose or headaches indoors? Your AC could be the culprit. Here’s what the experts say and how to ...

Why is my AC not cooling my home as expected? 'If your air conditioner is blowing warm air, it is important to diagnose the problem so that it can be fixed as soon as possible.

Wondering how much the average cost is to replace the thermostatic expansion valve (TXV) on an AC unit? This guide covers everything you need to know.

If your home AC doesn't seem to be working right, I've found several key changes that make a world of difference.