If you’re getting ready to replace your water heater, you will need to know how to turn off its gas supply. This may seem like an intimidating job, but with our easy steps, you will accomplish this task in no time. Knowing how to do this is also important for the rare instance that you would smell gas anywhere near your water heater, as this can be dangerous.

1. Clear the Area Around the Water Heater

If you have any items like boxes, bins, or other things near the water heater, you will need to clear them out of the way. This will allow you to access the gas pipe and shutoff valve.

2. Find the Shutoff Valve

Locate the shutoff valve along the gas pipe. Be sure to note that this valve is different from the one located on the control box.

3. Turn off the Gas Valve

Grab the handle of the valve and rotate it until it stops. You will know that you’ve turned off the gas when you see that the handle makes a 90-degree angle with the pipe.


  • Use a flashlight if the valves are located in a dark area


  • If you turned off the gas supply because you’re concerned about a gas leak, leave the premises and call a utility company for help as soon as possible.
  • As a safety measure, ensure the area around your water heater is as clean as possible. Doing so will help you access the heater faster in emergencies.
  • Do not store any chemical solutions or flammable products near your water heater.

Tools Needed

  • Flashlight

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