Just in time for summer is this DIY air conditioner. This is version 3 of the DIY air conditioner, so a lot of the problems have been worked out. It uses a heat exchanger and bags of ice to cool the air. He even made 40 bags of ice over the winter so he doesn’t have to buy any. [Thanks Franko]

DIY: Air conditioner

Dsc01839 Figure 6
We had previously posted about version 2