: I have very little hot water pressure, but good cold water pressure at all faucets in home. I am on city water, and have a gas water heater. Will it do any good to drain the hot water heater. Do I have to shut off the gas to drain it? I just bought this home. It is about 10 years old, and the copper piping going to and from the hot water heater looks good.
The problem could be the cold water feed valve on top of the water heater is partially closed. It could also be a partially closed valve somewhere on the system. Occaisionally, there will be a blockage or restriction at the water heater inlet or outlet right where the piping meets the water heater.
Draining the tank and flushing it can't hurt. You do need to shut the gas off before draining the tank and wait until it is full before relighting the pilot and starting the burner.
Good Luck. e-plumber