How To Turn Off Water Heater Water Supply. To turn the water supply off, give a gate valve a few turns clockwise until you can’t turn it any longer. In case you can’t find where water is connected to the heater, turn off the water supply for the whole house.
Go to your circuit breaker panel, find the breaker for your water heater, and switch it to the off position. The following thing you should check are possible crossed cold and hot connections. If you can turn off the gas valve to the water heater that would be best but if you just turn the dial to vacation mode that will also be ok.
You won’t see significant savings.
To shut off a water heater, turn off the cold water valve above the water heater. Turn off the water supply and turn on the faucet on the hot water settings. To turn the water supply off, give a gate valve a few turns clockwise until you can’t turn it any longer. This keeps your water from freezing, but also means you’re not wasting money keeping your water piping hot (hint: