Intermittent Low Hot Water Pressure

Hi,

I have a problem with the hot water pressure.

Many times after I flush the toilet, the hot water pressure (at the faucets) slows to a trickle. Once the toilet tank is full, there is a loud bang in the pipes and the hot water pressure (at the faucets) increases back to normal pressure. The toilet tank only has a cold water pipe connected to it.

Also, sometimes (like this morning) when I turn on the hot water (at any faucet) it initially flows at normal pressure but immediately slows to a trickle and remains like that for a while. Then I hear a bang in the pipes and the pressure returns to normal. This happened without flushing the toilet.

Any ideas what is causing this?


Thanks
Stoph

Many HWTs have anti-percolation checkvalves in them that can stick. I can often hear mine banging away and sometimes it sticks. I called the rental agency to fix it and we had someone lined up to come out but the wife cancelled after it stopped acting up. I started a thread on the issue a while back.