We had a new hot water tank installed a few months ago. Now when we turn off a cold water tap, we hear clicking noises by the hot water tank. What could cause this?
We hear it when any cold water tap shuts off ..e.g. toilet, washing machine, faucets. We do not hear it if another tap is on, or if hot water is running somewhere. The noise is like a clicking valve and it echos several times, getting softer each time. Could the change in pressure from closing the tap cause this?
A guy from the plumbing company that installed the HW heater suggests adding a Thermal Expansion tank. He also suggests installing a pressure reducing valve (PSI = 85) (house built in mid 70's). This company likes to push a lot of extra work. Do I need these? Would these eliminate the noise?
Thanks for your advice.
We hear it when any cold water tap shuts off ..e.g. toilet, washing machine, faucets. We do not hear it if another tap is on, or if hot water is running somewhere. The noise is like a clicking valve and it echos several times, getting softer each time. Could the change in pressure from closing the tap cause this?
A guy from the plumbing company that installed the HW heater suggests adding a Thermal Expansion tank. He also suggests installing a pressure reducing valve (PSI = 85) (house built in mid 70's). This company likes to push a lot of extra work. Do I need these? Would these eliminate the noise?
Thanks for your advice.