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Old 07-19-2009, 01:20 AM   #5 (permalink)
NiHaoMike
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Join Date: Sep 2008
Location: Texas
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For an electric water heater that is 240v, what about rewire it for 120v so it's only 1/4 the power? While it will not make for a direct energy savings, it will reduce thermal cycling (and thus prolong the life of the heater) and peak load on the grid. (In some cases, reducing the peak load can save money. If you also have A/C, install a relay to turn off the water heater whenever the A/C is running.)
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