
Here's a cheap homemade air conditioner made from an insulated polystyrene box, icewater, aquarium pump, copper tubing and a fan. [via] - Link.
Hot? Other other homebrew air conditioners:
Related:
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Some of these ideas use ice from the refrigerator. Remember that when you make ice, it creates more heat in the kitchen from the coil on the back of the refrigerator. You might have to remember to judge where you want the extra heat and where you need the cool.
You won't get something for nothing.
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