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Old 05-09-2009, 06:53 AM   #1
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Hot water coming out of all pipes...help!


Help..I have hot water coming out of all my pipes. even have hot water in the toilet! Is it my hot water heater? or the water pressure? What do I do? Can't afford a plumber.

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Old 05-09-2009, 07:18 AM   #2
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Hot water coming out of all pipes...help!


You have too much water pressure or temp is to high.. Is water comming out of the t&p valve ?? Have the water pressure & temp checked & possibly the T&P valve .. Maybe add expansion tank to the system. When I said check water pressure. Check it at the w.h. Drain. Thermo expansion is your problem . Adding the tank should cure it


Last edited by kenmac; 05-09-2009 at 07:53 AM.
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Old 05-09-2009, 08:10 AM   #3
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Hot water coming out of all pipes...help!


t & p valve? whats that & wheres it located?
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Old 05-09-2009, 09:22 AM   #4
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Hot water coming out of all pipes...help!


A brass valve on top in on the side of the w.h. Should have a pipe attatched to it.it's probably not opening as, the hot water is backing up in your cold water lines due to the thermo expansion. Caising hot water to come out of cold water lines. Add expansion tank and you'll be ok
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Old 05-09-2009, 09:32 AM   #5
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Hot water coming out of all pipes...help!


t&p valve is a temperature and pressure relief valve, usually located on top of your water heater. you have potentially a very dangerous situation brewing. if the WH is overheating that much and the t&p valve hasnt opened you could have an explosion. until you can do some diagnostics or find yourself a plumber, for God's sake turn the WH off. If it is electric trip the breaker, if gas just turn the gas line valve off.
you probably have a stuck thermostat, after you have it turned off look and see what the thermostat is set on, surely shouldnt exceed 120f if even that. also as the previous person suggested see what the temp is coming from the faucets etc. you are probably in over your head and may have to find a plumber or friend that can change out the thermostat and the t&p valve also because if it hasnt popped off its faulty. hope you get this before the explosion, and im not kidding.
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Old 05-10-2009, 08:31 AM   #6
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Hot water coming out of all pipes...help!


test the valve lift the handle .. very dangerous if valve does not work ..
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Old 05-10-2009, 08:33 AM   #7
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Hot water coming out of all pipes...help!


sorry for 2nd post should have been in the first .turn down the gas valve and see it the burner shuts off ...
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Old 05-10-2009, 08:41 AM   #8
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Quote:
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test the valve lift the handle .. very dangerous if valve does not work ..
Do not check this UNTIL you shut off the water heater and give it a chance to cool; you can speed the cooling process by turning a hot water faucet on after you shut off the heater and let cold water into the tank.
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Old 05-10-2009, 08:42 AM   #9
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sorry for 2nd post should have been in the first .turn down the gas valve and see it the burner shuts off ...
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Old 05-10-2009, 09:01 AM   #10
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Hot water coming out of all pipes...help!


Have you had any plumbing work done recently?
If not it sounds like the T&P valve
Some shower valves also have tempering valves
Possible that has failed & hot water is bleeding thru ?

Is there any cold water valve shut off somewhere?
That may allow hot water to back feed too

There is a tempering valve - this mixes hot & cold water befor eit goes to your shower/faucets etc
Then there is the pressure valve - this allows excessive heat/steam to exit the water tank in case of an overheating/overpressure issue. This valve EXITS the tank & should not allow water to back flow into the codl water system
BUT - if pressure is building & the T&P valve has failed (will not open) THEN this can cause an explosion. This is not a joke & is a serious condition. Water tanks have gone thru the houis e- thru the roof & found up to 100' away

Find this problem ASAP. It might not be a pressure build up, but it is a risk as faucetman stated

Last edited by Scuba_Dave; 05-10-2009 at 09:06 AM.
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Old 05-10-2009, 09:05 AM   #11
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Hot water coming out of all pipes...help!


Just to update.....turned off the gas to the water heater. Can't find t & p valve but back pressure caused other problems as the pipes are old and started leaking at every weak joint. Fixed one leak just to find another. What a pain in the a__.
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Old 05-10-2009, 09:15 AM   #12
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Hot water coming out of all pipes...help!


Have you had any new tub/shower faucets installed lately? remodeling a bathroom maybe? you cna have a cross connect between the hot and cold lines.
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Old 05-10-2009, 09:21 AM   #13
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Hot water coming out of all pipes...help!


no...nothing done lately. Just got in one afternoon to find no cold water, just hot water in all pipes.
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Old 05-10-2009, 09:25 AM   #14
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Hot water coming out of all pipes...help!


If you have pressure & leaks then that is a problem
Has your water heater been replaced recently?
Maybe someone did not put a T&P valve on?
Hard to think that would happen......

Watch this video from mythbusters & see how high in the air the water heater blows due to pressure

The area that contained the WH was totally destroyed
These things will go thru the entire house when they blow


T&P valve - can be located in different places

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Old 05-10-2009, 09:37 AM   #15
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Hot water coming out of all pipes...help!


If it didn't have a T&P ( or it won't operate) one would think that the ECO would shut the WH. down on high temp. If high temp were the issue


Last edited by kenmac; 05-10-2009 at 09:52 AM.
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