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Old 03-08-18, 09:52 AM   #5
Sccoupe
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Join Date: May 2017
Location: PA
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The existing water heater doesn't run much at all after the water is heated. I don't want to rely on the heat pump to keep hot water ready especially after heavy usage. What really helps is feeding it with water that is warmer than from the ground so that it doesn't use so much juice to re-heat after a large amount of hot water is used in one instance.

I like the coating idea. Dump in a gallon of sealant and roll it around for coverage. The trick now is to find a sealant that can be used over rusty steel while be safe for potable water as well as heat resistant for 120F.
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