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Un-Registered User
Join Date: Apr 2007
Location: Upstate New York
Posts: 902
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The new heater could be producing hydrogen bubbles because of the anode type. That's why you would only see it on the hot supply. There are ways to test for this. The hydrogen would be flammable. It is often resolved by changing the anode type. If this is the problem, try an aluminum anode.
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Don
1988 Targa
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