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Old 01-08-21, 07:38 PM   #93
Supreme EcoRenovator
Join Date: Jan 2010
Location: elizabethtown, ky, USA
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Use one of the Gargantuan computer case fans. 15 bucks for an 8 inch, moves somewhere around 100 CFM with a little back pressure. Sooper quiet, ultra low power, but they only produce a millimeter or two of pressure.

The other thing I do a lot is recycle broken dryer motors. They're all rated for 300-350 CFM through a long dryer hose. GE are short, Whirlpool are taller. Straight out a short pipe, they can do over 500 CFM. Made for massive pressure drop on either side (inlet suction or outlet back pressure). I've actually got a GE one rigged to preheat and/or precool my garage. It literally sucks air from the space above the drop ceiling in the basement.

Last edited by jeff5may; 01-09-21 at 09:03 PM..
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