Any damage to Water heater in the attic, if main water to the house is shut off for a month when owner on vacation, please? Thank you in advance for your help.

  • Gas or electric WH? – Jim Stewart Aug 20 '18 at 14:57
  • Hello, and welcome to Stack Exchange. While the water was off, was the water heater left on? Was any water drawn while the water was turned off? – Daniel Griscom Aug 20 '18 at 17:17
  • Mines were gas WH. – Oanh N. Tran Aug 24 '18 at 19:37
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    Hi Daniel. I kept my WH at the pilot setting. How do we know if it draws water when the valve is shut off? – Oanh N. Tran Aug 24 '18 at 19:39

There should be no damage, but of course this would be non-freezing conditions. What setting would you leave the heater on? If electric, I would say switch off power to the heater. If gas, switch to vacation/pilot setting or even turn gas off at the heater.

Upon return I would turn the heater to hot (140 F) and let it come to temperature, then run hot through all delivery points.

  • Thank you. We will turn the setting to pilot, cutting off the ice-maker and turn refrig. to low setting. And shut off the main water valve. Is there other thing to do; off for one month in Late September and Texas weather, no deep freeze? – Oanh N. Tran Aug 20 '18 at 15:15
  • Are you shutting off the water at the city meter or with your own valve? – Jim Stewart Aug 20 '18 at 15:17
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    Hi Jim. We will shut off water to the house. Will keep water from the main city meter on because of sprinkle system. – Oanh N. Tran Aug 24 '18 at 19:34

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