How To Safely Turn Off Gas Water Heater. The steps to turning off your water heater are as follows: If you ever turn on your faucet and have steam instead of hot water and/or your t&p valve is releasing steam or water, immediately shut off the fuel source to your hot water heater.
All appliances that require water or gas have a separate shut of valve usually within a few feet of the appliance. Turn off the power source; Find your breaker box and flip the breaker for your water heater.
If it is gas, close.
If you have a gas water heater, find the burner control knob (usually located near the thermostat) and turn it to the off position or to the “pilot” setting to shut off the gas supply. In other cases, turning off your water heater may be desirable, but not necessary, like in the case of a leak. Usually this will be on the left side as you look at the heater towards the bottom of the heater. To turn off the gas supply to the water heater: