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cut off the gas pipe valve, or the circuit breaker in the main panel for an electric heater

Electric heater is always turned off at circuit breaker, but heater receives no heat and tank can freeze. To prevent freezing while on vacation, turn off electricity, open cover(s) on front of water heater, use a screwdriver and turn down thermostat(s). Thermostats will be marked with temperature so when you return from vacation, rotate temperature back to original setting, or save money by setting temperature lower. Be sure to put insulation and covers back on each time so thermostats read correct temperature.

Gas heater: Depends on why you want to turn off water heater.

Going on vacation, simply rotate large dial on front of gas control valve until "vacation" is at top. This will keep temperature at 50 degrees F and prevent freezing. Then when you return from vacation, rotate dial back to original position. Take photo of dial so you remember original position since markings on valve are not specific. The advantage of rotating dial is that pilot light stays lit.

If you want to turn gas completely off, then the pilot light will go out, and the tank receives no heat. To turn off gas, go to gas control valve where large temperature-setting dial is located. There is a 1/2" - 3/4" gas line that connects to side of gas control valve. The gas line can be flexible pipe or rigid black pipe. Follow the gas line a short distance and you will find a brass shut-off valve. The brass valve has a rectangular piece on top where a crescent wrench fits. Rotate the rectangular piece 1/4 turn. Once the rectangular piece is perpendicular to the direction of the gas line, then the valve is off.

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13y ago
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13y ago

There should be a brass or yellow Accordion looking flexible metal pipe near the bottom follow it to where it connect's usually towards the back wall and there should be 1/4 turn brass valve. if not better get one, and turn off at meter

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9y ago

Electric, flip the circuit breakers off, gas turn the dial on the control to off. Pilot light will stay on. If you want to turn that off, there should be a shut off valve in the line close to the heater.

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14y ago

The manufacturers give really great detailed directions why not look at them

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14y ago

There should be a shut off on the cold water line at the tank. If not, you have to shut the whole house off.

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Related questions

When working on plumbing pipes do you have to shut off the hot water heater as well as the main?

No. The Main is source of water for that as well.


How can you shut off hot water in your condo?

If you have your own water heater there should be a shut off at the heater. If not I would look under the kitchen sink. There may be shut off valves at each fixture. If there is a central water heater in the basement, there would be a shut off to each unit.


When shutting the water heater down for five or more days you should shut the fuel valve off and?

allow the unit to operate until the flame goes out


Where is Valve Shut Off on gas water heat?

On any water heater, the shut off is on the incoming cold pipe.


How do you shut off water from water heater?

One shut off the gas /electric other emergency switch FIRST


Why would you smell fuel when you turn on the heater?

May be separate problems. A small fuel leak in the engine may be the source of the 2 scents. A coolant leak may be the source of the poor heat and burning smell. Get it checked out before you have a serious problem. Next time you run the car, shut it off, lift the hood and try to smell where the source of raw fuel is, or any rising smoke.


Your electricity just got shut off Will your gas water heater still distribute hot water?

Yes, your gas water heater will still distribute hot water.


Do you need to shut off the water heater while you briefly turn off the water main to install shut off valves on sink supply lines?

As long as the water doesn't drain out of the heater somehow, no. What kind of car are we working on...


Main off and still have water flowing?

You will get some back pressure from the water heater. It will come out of either the hot or cold. Shut the tank off if there is a shut off there.


If there is a danger of freezing while the M-80 water heater is shut down you should?

drain the water tank


How do you shut off water to shower in a condo.Shower wont stop dripping about 4 gallons an hour?

If you have a water heater in the unit there may be a shut off before that, usually at the floor or follow the cold side to a shut off. There may be an access panel behind the shower, possible in a hall closet but not always and there might be shut off valves there, but not likely. If your water heater is in the basement, there should be a shut off for each unit there.


Do you need to shut off hot water heater when replacing copper pipes in a bathroom?

Yes you need to shut off the Main water valve. Usually found in the basement or outside the house near the meter. Also you need to shut off the Gas valve located at the water heater, or the Breaker located in the breaker box/ fuse panel. Sometimes the water heater will have its own Switch box, located on the power wire