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Not if the water heater is electric

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Q: Do you have to turn off the main gas value to change a water heater?
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Related questions

What is a orifice on water heater?

Gas water heater has an orifice for main burner and for pilot light, if not electronic ignition.


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.


Does the main burner on a hot water heater stay on all the time?

No.


Main water supply line to water heater leaking The main line comes out of the ground and is leaking around the sleeve and the coupling before the shutoff valve for water heater How do you fix this?

you could buy a new one ? or call a mechanic ?


Why is there still a trickle of water in your kitchen faucet when main valve shut off - no trickle anywhere else?

Water is coming down from upstairs or it is back pressure from the water heater. If it is the water heater, it can come out of either side of the faucet.


What is an example of converting electrical energy to thermal energy?

Example is ,an electrical heater connected to a main switch and the heater is placed in a bucket filled with water.


Why are the radiators warm but water is cold in a central heating system?

Central heating systems usually heat on a different system from the hot water heater, unless the main heater is a combination furnace/hot water heater. If this is the case, it could be because the outflow of hot water is greater than the ability of the furnace to heat the water.


What are the main home uses for an electric hot water heater?

Electric hot water heater is used to heat cold water for use in winters. Electric hot water heaters heat water faster than the ones which consume fire in order to heat water.


When shutting main water supply is it dangerous for water heater?

No, with the main shut off, no water can be taken from the heater so it will just sit there.


How do you replace a TPV on a water heater?

To replace the TPV on a water heater a plumber will have to buy a new one. After switching off power from the mains and closing the main tap, the plumber can then replace the new TPV .


Even when house water turned off why will water still drain from the hot water tank?

Reason for question: Plumber left valve open and flooded house The hot water (heater) tank is fed from a 'header tank'; normally in the loft space but can be combined with the main heater tank (fortic). The header is filled from the water main. Unless the header is drained or its outlet is closed off, it will drain down through the open valve of the hot water (heater) tank.


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...