Vol. 18: Build a Heat Exchanger

Fresh air without the energy loss.

By Charles Platt

Photos by Garry McLeod

Illustrations by Charles Platt

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Has anyone else built this?
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I have a question for anyone else who has built this. Did you have problems getting the speed controller to run the fans? I'm stuck.
Posted by fedexaaron on December 01, 2009 at 21:41:41 Pacific Time

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