There should be no reason that it can't be left on given that the unit unlike the standard WH which is temp controlled the truma only activates when there is flow from a hot water faucet. JMHO
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Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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