"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Simple air conditioners are really nothing more than a heat exchanger that move heat—or cold—from one ...

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FRESNO, Calif. -- These homemade air-conditioner instructions will help you skip the expense of air conditioning this summer. These DIY air conditioners will give you up to 6 hours of coolness.

Things are heating up this summer across the country, and air conditioner-less times and places call for some DIY ingenuity. You've already seen how to build a $30 ...