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Old 02-07-2012, 09:35 PM   #1
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Lack of hot water


I'm having a problem with our hot water in our upstairs shower. The water never seems to get hot enough. The rest of the faucets in the house don't have a problem getting hot enough. The house is older with a Kohler faucet. I tried taking the mixer apart and adjusting the adjustment screw, but it is completly stripped out and won't move. I pretty sure it's the mixing valve, but I was wondering if they sell some kind of rebuild kit so I don't have to tear into the wall. Any help would be appreciated...

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Old 02-07-2012, 09:52 PM   #2
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I'm having a problem with our hot water in our upstairs shower. The water never seems to get hot enough. The rest of the faucets in the house don't have a problem getting hot enough. The house is older with a Kohler faucet. I tried taking the mixer apart and adjusting the adjustment screw, but it is completly stripped out and won't move. I pretty sure it's the mixing valve, but I was wondering if they sell some kind of rebuild kit so I don't have to tear into the wall. Any help would be appreciated...
really need a picture to say for sure..but should be able to get new cartridge for unit???

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Old 02-08-2012, 06:02 PM   #3
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really need a picture to say for sure..but should be able to get new cartridge for unit???
i don't think that there is a cartridge. It's an old Kohler all brass mixer. If that makes helps.
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Old 02-08-2012, 06:47 PM   #4
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i don't think that there is a cartridge. It's an old Kohler all brass mixer. If that makes helps.
there should be some kind of mixer inside that unit to control hot-cold mix????
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Old 02-08-2012, 06:53 PM   #5
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Lack of hot water


No picture, no mention if it's a single handle or two handles hard to say.
To change the whole unit out its done behind the wall the shower is. Right where there should have been an access panel in the first place.
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Old 02-09-2012, 07:27 PM   #6
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Lack of hot water


It's a single handle. I'm going to pull it out this weekend and take a picture and post it. Thanks for the help
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Old 02-09-2012, 08:07 PM   #7
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Lack of hot water


There is a cartridge---find a real plumbing supply house that will be open---call and make sure they have the full rebuild kit---on some models the front piece of the unit falls apart and needs replacing along with the cartridge---big box store might not have that on hand.
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Old 02-09-2012, 08:17 PM   #8
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A different spin, but galvanized plumbing by chance?
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Old 02-09-2012, 08:27 PM   #9
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I'm pretty sure it's galvanized. Another symptom that is strange is that if I have the shower on full blast hot, there is almost no hot water if I turn the hot water in the sink in the same bathroom. That sink has two handles.
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Old 02-10-2012, 07:53 AM   #10
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I'm pretty sure it's galvanized.
If so, it could be that the supply line is crudded up, restricting flow.
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Old 02-13-2012, 08:44 AM   #11
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I think this is what the problem is... I took off the mixer and turned back on the water. Nice stream out of the cold water. almost nothing out of the hot water side... Not good.. Is there anything I can do? Thanks for the help....
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Old 02-13-2012, 05:10 PM   #12
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The only soultion that I know of is to replace the line, with copper or pex, not galvanized, and take it all the way back to the souce, as it's one of those do it now or do it later type things. First though, just to be certain, I would chase the line all the way back, just to make sure that a valve hasn't been accidently bumped; unlikely, as it probably has old gate valves, if anything, and not very likely easily bumped, but worth a shot. And, since you will probably have to open wall cavities, I would plan on replacing hot and cold lines.

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