"jschmitt28" wrote in message
...
Hello everyone. I'm hearing a clicking or knocking noise coming from the
water heater. After you flush a toilet and the tank refills or when you
quickly turn a faucet to full-on and then full-off, a clicking sound comes
from the water heater. It's usually 3 clicks. One really loud, then
slightly loud and then sort of quiet. This sound came about within the
past year or two and actually sounds a little worse now (or maybe I'm just
getting obsessed with it).


Is your heater gas, and is it electronic ignition or pilot light? If it's
e-ignition, you could be hearing the clicking of the igniter (down where the
thermostat is). I don't know if it can be fixed. But it makes me wonder
why this happens every time the toilet is flushed; the 'terlit' should have
cold water going into it.