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Cheap solar room / shed warmer
Friday, 23 December 2005
For a super-simple and super-inexpensive solar heating system that really works," say Don R. and George Waterman of Springfield, Missouri, "you only have to follow four rules. One, glaze with low-cost plastic film instead of glass or plexiglass ... two, use a structure's existing south-facing wall for the back of your collector ... three, forget about trying to store the heat you collect ... and, four, scrounge!"

This $30 solar setup heats a 30 x 40 workshop for five hours or more every sunny winter day.

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