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Old 09-15-10, 01:41 AM   #6
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The first time I came across using attic heat was in John Seymour's book Blueprint for a Green Planet. Page 153 has a drawing of a solar house with a heat recycling pump, with the following description "This pumps the warm air that gathers in the upper parts of the house back to ground level where it is most useful".

If you have an unused chimney then go ahead and use it! It will save you the hassle and expense of running a duct between floors. Maybe make a circuit that checks temperatures and turns the fan on only when the attic is warmer than the kitchen? And Patrick is right about filtering.

Any chance of getting some insulation on that attic door?
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