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« "Green Homes for Sale" Pick of the Week | Main | Indoor Coolness without Air Conditioning »

July 13, 2007



I recently had an innovative retrofit called Powerzoning for my existing central air system. It uses naturally cold basement air to cool the house as a sort of "pre-cooling", which delays the AC having to kick on as much. Basically, just running the furnace on "fan" mode pulls the cold air upstairs. Pretty ingenious once you think about it - almost a poor man's form of geothermal cooling.

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