Quote:
Originally Posted by Red88Carrera
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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Never having an electric water heater, I was not aware of this. Interesting, could be the cause.
edit: Just did a quick search on the topic and, wow, it's very common. Something to follow up on, Lee.