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Old 11-15-11, 06:56 AM   #3
pinhead
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Join Date: Jul 2011
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I am thinking of installing a system like this so after my shower I went to the basement to feel the cast iron drain pipe. It was cool to the touch. I am sure copper will be a better conductor of the heat, but I think 2' is much to small to aim for to see large gains. But if 2' is the only room you have it might be enough to see some gains. The production versions are often 6 or 8' long.
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