Asked by: Silvania Ausin
asked in category: General Last Updated: 14th January, 2020

Does a hot water heater have a shut off valve?

All water heaters are supposed to have a shut-off valve on the cold water supply. If the water heater is going to be replaced, this is where the water gets shut off. Some homes also have a valve on the hot water side of the water heater – these aren't required, but they're also not a problem.

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Correspondingly, does shutting off water affect water heater?

If the element gets turned on without water surrounding it, it gets too hot and burns up. In rare circumstances, you could also get a buildup of dangerous pressure if the relief valve were to fail. So, yes, please turn off your water heater when you turn off your water main.

Additionally, how do you know if a valve is open? When the handle of a ball valve is parallel to the valve or pipe, it's open. When it's perpendicular, it's closed. This makes it easy know if a ball valve is open or closed, just by looking at it. The ball valve below is in the open position.

In this manner, where is the hot water supply shut off?

If you have a combi boiler, you can turn off the hot water by turning off the mains stopcock. You can usually find the mains stopcock in the vicinity of the kitchen sink. It may be in the cupboard under the sink, or it may be on an adjacent pipe.

Can a water heater explode?

If the temperature is set too high or the pressure relief valve of a water heater malfunctions, a water heater can explode. This can happen with a gas or electric hot water heater. Although it is unlikely for water heaters to explode, when they do, they operate much the same as a rocket.

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