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How to Shut Off Your Water Heater (Gas, Electric, Power Vent)
Knowing how to shut off your water heater is a five-minute skill that saves thousands in damage. Walk through it once with the lights on so you're not learning it at 2 AM.
Gas water heater
- Find the gas control valve on the front of the tank (round dial with ON / PILOT / OFF)
- Rotate to OFF — not PILOT
- Then close the gas supply valve: yellow handle on the gas line above the unit, turn perpendicular to the pipe
- Close the cold water valve on top of the tank (clockwise)
Electric water heater
- Open your electrical panel
- Find the double-pole breaker labeled Water Heater (usually 30 amp)
- Flip it fully to OFF
- Close the cold water valve on top of the tank
Power vent water heater
- Same gas shutoff steps as a standard gas unit
- Unplug the power cord — power vents have a 120V plug for the blower motor
- Close the cold water valve on top of the tank
⚠ Power vents have BOTH gas and electric. You have to shut off both. Forgetting the electric leaves the blower trying to spin a dry system.
Want us to label your shutoffs?
Every install we do, we tag your gas, water, and electric shutoffs in plain English so the next emergency is a non-event.