Passive solar horizontal crawl space heater, solar energy, recycled materials

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Passive solar horizontal crawl space heater, solar energy, recycled materials.
Our second passive project is assembled and installed. It is a horizontal collector
designed to feed heat into a crawl space. It will be connected to existing ductwork.
Our first passive solar window heat unit has been operational for several weeks and
outputs increasing amounts of heat as the leaves fall.

For more info:

http://greenenergyon-line.com
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