Reply To: AO Smith Model PCG-75

The Tank AO Smith Model PCG-75 Reply To: AO Smith Model PCG-75

Larry Weingarten

Hello: The mixing valve approach can work, but it’s another moving part to fail, which happens a lot with hard water. I see it as a band-aid. One thing that could be having an effect here is the dip tube. If for some reason, there isn’t one, or if it’s on the wrong side, that could be showing some of the symptoms you have. Also, doing the cross connection test Randy suggested is good. Is there a recirc line? That also could play into this. Once all the possible “other” problems are covered, the control is the next thing to focus on. 😉

Yours, Larry

Water Heater Rescue

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