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Old 01-31-2009, 03:12 PM   #1
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Hot water goes cold...


After short periods of time in the shower, the hot water seems to change to ice cold. I really don't know anything about plumbing, so was wondering what everyone thinks about it? Are there any reasons that the water might be losing it's temperature? Sometimes it doesn't get cold as quickly, or it will be cold for 5-7 minutes then heat up again.



help anyone?


Last edited by raggedbeefman; 01-31-2009 at 04:31 PM.
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Old 01-31-2009, 04:56 PM   #2
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Hot water goes cold...


just a guess but sounds like you have a boiler without a separate hot water tank. Could just be the heating element cycling. Turn down the stat next time you shower so the boilers not heating both the hot water for your shower and the baseboard(?) hot water.

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Old 01-31-2009, 05:01 PM   #3
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Hot water goes cold...


ok, if it helps i can take a picture of my furnace/tank stuff to show on here. I will try that next time to see if that helps.
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Old 01-31-2009, 05:25 PM   #4
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Hot water goes cold...


Quote:
ok, if it helps i can take a picture of my furnace/tank stuff to show on here. I will try that next time to see if that helps.
Ayuh,...

You haven't stated Any of the facts needed....
How is your water Heated,..??
Electric,..??
Gas,..??
Stand alone Waterheater,..??
Coil off the house heating system,..??

Ya gotta atleast give Us a Few Hints,....??...
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Old 01-31-2009, 07:40 PM   #5
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Hot water goes cold...


it runs off of our heating system, which uses oil and is a steam system.
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Old 01-31-2009, 08:08 PM   #6
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Hot water goes cold...


Things to try:

Turn off washing machine faucets before the hoses.

Make sure other bathtubs and showers are turned up using faucets and not the sprayer or shower head. This is to prevent cold water from crossing over and going the wrong way down the hot water pipes.

Does your plumbing system have an anti-scald mixer down near the furnace? This might malfunction causing a lot of cold water to enter the hot water pipes.
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Old 01-31-2009, 08:11 PM   #7
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Hot water goes cold...


I'm not sure what an anti scald mixer is? What does it look like?
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Old 02-01-2009, 07:17 AM   #8
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Hot water goes cold...


it could also be a faulty scaldguard valve in the shower itself, if you have that.
it's kinda like the thermostat in your car. it gets too hot, it opens to let in more cold water.
if faulty, it could be doing what you describe.
i love ours, no toilet shock or pressure loss when a flush happens!

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Old 02-01-2009, 08:55 AM   #9
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Hot water goes cold...


how would I go about fixing that?
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Old 02-01-2009, 09:43 AM   #10
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Hot water goes cold...


first, you need to see if you have one, pull the knob from the shower and see if there is an adjust for temp.
if so, that may be the problem.

http://images.google.com/images?clie...-8&sa=N&tab=wi

look through these images and see if you see anything that looks familiar from your plumbing.

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Old 02-01-2009, 09:50 AM   #11
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Hot water goes cold...


ok will do, I have multiple showers that this happens too, could it be the same problem with them? or is there an anti-scald downstairs I can look at? If so, what does it look like?
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Old 02-01-2009, 10:03 AM   #12
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Hot water goes cold...


if it happens in more than one shower, then it's not a scaldguard in the shower problem. look through the images i posted the google link to and see if you see anything that you may have downstairs.

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