Quote:
Originally Posted by B-flat
We are heading up north for 4 months. We have a gas hot water heater that I turn to low/vacation mode. My question is can I safely shut off the main supply of water to the home without the possibility of causing damage to the hot water heater?
I'm leaving the irrigation system on.
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Should be OK unless somehow the water gets drained from the tank. Our water heater is electric so we simply turn off the water and throw off the circuit breaker to the tank, but with gas you would have to shut off the gas line and turn off the pilot light, which is more cumbersome. The tank should have a built in safety mechanism that would not allow the heater to kick on if the tank is dry, but “should” and “does” are not always one in the same.