Air Conditioning & Refrigeration

Learn how your air conditioner works and how to keep it running correctly. This section covers all the main components—such as the compressor, condenser, expansion valves, air filters, and evaporators—and explains the various types of each.

Here, you’ll find common problems, easy DIY fixes, and tips for knowing when to call a pro.

Start here if your AC isn’t cooling, making noise, or running too much. I’ll help you figure it out fast.