Solar Chill from Tucson’s Southwest Solar is a fantastic way to cool your house completely with solar power or for less than fifty cents a day on regular grid power. This really isn’t any newfangled technology or anything, just a really efficient use of evaporative cooling. Evaporative cooling works well out here in Arizona where it is hot and dry but not so much in areas of high humidity like most places out east. Even in Arizona in late July and August it can get a bit too humid for this type of cooling. April thru July  this would be the perfect solution to using little or no power (with solar) to cool your house. According to Bill Cunningham of Southwest Solar, these can be run 24/7 for a month straight and it would only cost around $10 in electricity. The Solar Chill only uses 10-20% the power of a traditional evaporative cooler and just a fraction of what air conditioning uses.

If you live out west in a dry hot region you might consider looking into one of these coolers to save a bundle on cooling costs. To learn more about these coolers check out Southwest Solar’s website and listen to this episode of Freshly Green where they interview Bill Cunningham of Southwest Solar.

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These tables show if evaporative cooling might work for you in your neck of the woods…

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