I found that after I drained the entire system, including the hot water tank, it removed the air in the system; I refilled leaving faucets open and I was amazed on how quiet both the pump and the lines were after that. It it is actually the pump or the physical lines, see the suggestions above.
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2019 Chevy express 2500 Van Coversion. 2017 Jayco 23MRB: 26' total and Glacier Package. 2 Renogy solar panels. Married 49 years. Haley the mutt, 4 years old. "Excited to learn new things everyday and humbled by those who offer to help." And very grateful to our Moderators!
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