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Author:
JulieC (CO)
Hi all:
I hope someone can help with this crazy situation!
I have:
Price Pfizer 3 handle in this hall bath and a
Bradford White 2004 40 gallon gas hot water heater.
Found out that when the hot water is turned on in my hall bath, it gets luke warm at best. Ran it for 8-10 minutes 2 times (all other faucets including the sink in the hall bath have hot water but they were all turned off for this test).
All other hot water faucets in the house work fine in terms of temperature and water pressure including the sink in that bathroom.
Replaced the diverter even though it looked ok and ran the hot water through it - no debris. Checked both the hot water and cold water valves washers and all, didn't change because they look ok.
Checked the fill tube in the hot water heater, no erosion or corrosion - looked just like the one from the plumbing supply store that I was going to put in!
I don't know when this problem started as although I've owned the house for 4 years, it was discovered by a guest.
(emailed previous owner and he said there was not a temperature control device installed (bath was used by child) and that he never has a problem with the hot water)
ok, latest info: shut off the hot water valve on the hot water heater....then checked all the faucets for water from the hot handle/position. Every one had water running out of the hot water handle/position. Does this mean that someone connected the cold water pipes to the hot water pipes somewhere in the house? And if yes, that we will have to break into the walls to find the place where the cold water pipe is connected to a hot water pipe?
Can someone please help?
Thanks so much in advance!
Edited 1 times.
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Author:
North Carolina Plumber (NC)
I don't think the hot water pipe is connected to the cold water pipe, the cross over can occur at the fill valve on a washing machine, hot + cold outside faucets, a shower diverter if one of the ports is plugged, etc.
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Author:
KCRoto (MO)
with the cold water inlet in the tank shut off, turn off all the angle stops under the sinks, shut off laundry supplies, and try the hot water in one sink first. If it still runs, it is either a recirculation system with a bad check valve, or a single handle valve without stops is causing crossover. It is highly unlikely that the pipes are actually connected improperly, but a bad check valve in a hot water recirculation loop can cause the same effect, or an incorrectly installed recirculation system. If the water doesn't run, you can have someone turn on the stops one by one through the house until the water starts running. The one that starts the flow is the problem generally speaking unless there are other factors.
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