You have a clog in the hot water line.
If problem is at one faucet, then remove aerator and clean, then disassemble lines underneath sink.
If problem is at every faucet, then that moves search close to water heater.
Look at hot water line that exits water heater and trace that line to first Tee.
Look at cold water line that enters water heater and trace that line to Tee.
Clog is located between those 2 Tees.
Buy pressure tester that connects to hose thread.
Connect pressure gauge to hot water heater drain valve.
Then conduct same test you did at faucet.
See if pressure drops at tank.
If pressure drops, then clog is on cold side of tank, and probably hot side too.
If pressure does not drop, then clog is on hot side of tank.
Suspect 1 is any place two different metals join. For example galvanized pipe and copper.
Suspect 2 is supply pipes that exit top of tank. Take apart and look inside pipes for corrosion and sediment lining pipe walls.
Suspect 3 is elbow. Disassemble pipes and look for sediment and flakes of rust.
Suspect 4 is all suspects above, each having sediment and corrosion.
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For a price, expert speaks with you over phone while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.
Any ideas on the following: The Compressor on my Rheem 10seer/4 ton AC was just replaced. Right after that was fixed hot water has been released from the cooper drain pipe which is connected to the temperature pressure release (TPR) valve on my Rheem electric 50 GAL water heater. A Plumber changed both thermostats on the water heater and two days later there is hot water continue to discharge/running out (sometimes dripping and sometimes steady flow during heat of day when AC is running)of the TPR. The plumber (same company that repaired AC is trying to tell me no connection between the new compressor being installed and the TPR releasing hot water, and it doesn't seem to be a coincidence, in fact both cooper pipes on water heater are very hot to the touch, shouldn't one be cold?). If they replace the TPR valve next and the hot water pressure continues will it not continue to release. Seems like these guys continue to guess?? HELP...
Thanks, plumber is going to replace the T&P Relief valve tomorrow, Keeping my fingers reluctantly crossed. No hot water runs from T&P drain pipe until mid-day when AC has been running most of day. Water seems to slow/then stop running when sun goes down. I hope I'm wrong but I think the AC HRU is pushing too much hot water into water heater, the water heater problem described only started after they replaced the outside AC compressor and chargd it. What do you think?
Sorry to all you so-called experts. I was correct. Upon disconnecting the AC Heat Recovery Unit HRU), the leaking from the T&P relief valve stopped. Obviously the HRU was defective causing too much hot water to enter the hot water heater.
Sorry to all you so-called experts. I was correct. Upon disconnecting the AC Heat Recovery Unit (HRU), the leaking from the T&P relief valve stopped. Obviosuly the HRU was defective causing too much hot water to enter the hot water heater.
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