| http://www.w3.org/ns/prov#value | - An average attic fan for sale at Lowe's will suck out about 1,500 cubic feet per minute, which may sound like a lot but really is not all that much. (We have four 1,500-cubic-foot-per-minute attic fans in our attic, which sounds like the house is about to take flight when all four turn on at once.) A solar-powered attic fan may seem like a great idea because the fan runs essentially for free.
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