Plumbing Questions? Ask a Plumbing Expert.
Hi my name is ***** ***** I have been in the plumbing field for 20 years. I will be glad to help you today. Is this a new problem or has it always been this way? Has the shut off on the water heater been turned off recently?
Has the shut off on the water heater been turned off then on recently?
Is the problem that the pressure is low or the water is not hot?
Have you checked the shut off on the water heater is turned all the way on and that the flexible line on the water heater is not kinked?
You did check that? If you did then there is a blockage on the inlet of the water heater or the outlet. It very well could be a blockage in the shut off valve itself. I would first try turning it off and then on and if that does not work then turn it back off again and disconnect the line from the cold inlet of the water heater and direct the line into a bucket and turn it on and flush it. Connect the line again and disconnect the line from the supply on the outlet and do the same. That will certainly solve the issue.
And the low pressure is only on the hot and everywhere?
When you flushed the line did you use the shut off on the water heater? Did you also disconnect the line on the outlet on the hot side and flush it there? Have you ever flushed your water heater and what type of water heater do you have?
Yes, draining it with the gas off then turn it on a bit to stir up any debris and drain again until no debris comes out. No chance the issue started when the shut off on the water heater was turned off and then on, right? When you run a hot tap do you hear hissing like the water is restricted at the shut off on the water heater?
Did it fill quickly? How long did it take to fill?
I have been thinking about what else could have caused the water pressure to get low like that. The cold water inlet and the hot water outlet have heat traps on each. It is basically a rubber flapper that keeps the water going in one direction. Either one of these nipples is in backwards and it took a while for it to get stuck partially closed or water pressure has pushed one of the rubber flappers through and it is stuck closed. This has got to be the issue. Remove the nipples and you will see the little rubber flap that is causing the problem.
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