We may earn a commission from links on this page. If you find yourself experiencing an unexpected heatwave and your air conditioner goes down, keeping cool can be difficult. While nothing beats the ...

These homemade air-conditioner designs take the mystery out of cold-air production. Some are complicated, some are cheap and simple, some run on alternative energy, and the last one is so out there ...

Simple air conditioners are really nothing more than a heat exchanger that move heat—or cold—from one place to another. Usually, they take warm air and move it across ice or chilled water where it ...