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Is 'free' hot water worth it?
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11-10-2013, 06:04 AM
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FF
Guru
Join Date:
Oct 2007
Posts:
22,553
Solar can work , but the surface area of the heating tank is large.
To use excess solar power from a panel could be done as 12v and 24v heating elements are made. Most are only 50Watt , so not strong.
Backwoods Solar has them.
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