The Coldwater splits three times before it reaches the hot water tank. The tank is located in a loft. The cold inlet side of the hot water heater pipes is hotter then the hot outlet side. Could water pressure be the pro could water pressure be the problem why my hot water heater is fluctuating between hot and cold water

SOURCE: I have a thermostat mixer shower but hot water has

The thermostatic mixing spool cartridge may be worn out. The low water pressure may indicate sediment in the cartridge as well. This can be easily removed by hand tools

SOURCE: Also, the copper pipe that is supposed to carry

That is normal, the heat just rises from the hot water, the pipe on the right should be cold and if you were to run hot water anywhere in the house it will immediately cool of the cold inlet pipe and you can feel it

SOURCE: I am losing water pressure, but only on the hot

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.

Add a comment for more free help.
Also take advantage of fixya phone service.
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.

Mike Cairns

• 3054 Answers
• Posted on Oct 29, 2011

SOURCE: I replaced a 15 year old Rheem 40 gallon electric

These are interior metals, similar like rock used in a sauna, to help keep water hot longer. Here is somethings to check out.

Hello, dave

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