In the past year I have dug a 20 foot deep pond that is only 75 feet from my house. It holds just under 1 million gallons. This spring I put in under ground conduits from the house to the bottom of the pond. Now i can just slip my heat exchanger lines thur the conduits and sink them in the pond. A heat pump will pump 4 times the energy that it uses in to the hot water and the house. Not perfect but 90% renewable.
Last edited by diesel_john; 05-26-2008 at 01:22 PM..
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