Forum Discussion
wolfe10
Nov 11, 2013Explorer
Actually, you WANT air at the top of the water heater. When you heat water (or virtually anything else) it EXPANDS. Water is non-compressible. If no air at the top, the overpressure will cause the pop-off valve to leak.
And, if the on/off bothers you (as it does me), fit an ACCUMULATOR.
And, if the on/off bothers you (as it does me), fit an ACCUMULATOR.
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