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Old 12-22-2009, 07:39 AM   #1
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hey guys....getting luke warm water in the shower when the faucet is turned all the way to hot...trie to warm up but doesn't get that hot. use to have to cut it a lil with cold water...but now..all hot and it gets luke warm...not very comfortable to shower have a tankless oil set up....the pressure is reading between 15-20 and the thermostat is reading between 170-180 i checked the the in and out pipes to the furnace and the hot one is hot and the cold one is cold...really need some help here guys!!!!!!!!!!!

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Old 12-22-2009, 07:42 AM   #2
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Your shower valve probably has adjustments for the hot water inlet. Take off the escutcheon and see if there is a temp limiter. Also, now that's it's winter, you are getting colder ground/inlet water to the water heater and it probably can't keep up with the desired heat rise.


Last edited by jerryh3; 12-22-2009 at 07:45 AM.
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Old 12-22-2009, 07:48 AM   #3
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Originally Posted by jerryh3 View Post
Your shower valve probably has adjustments for the hot water inlet. Take off the escutcheon and see if there is a temp limiter. Also, now that's it's winter, you are getting colder ground/inlet water to the water heater and it probably can't keep up with the desired heat rise.
what is the escutcheon..would this temp limiter be like a screw that just turns left or right? if so...i took of the faucet handle and turned the screw to let in more hot water....not sure if this is what you talking about.
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Old 12-22-2009, 08:02 AM   #4
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Sorry. The plate that covers the valve. Most newer faucets have some sort of temperature limiting device. If it's a single handle valve, it's sometimes a little plastic clip that limits the travel of the handle. If you have the model number of the faucet, you could probably find the manual online and check the temp limit instructions. Did you see any difference after turning that screw? Have you checked the hot water at other faucets? Does it feel as hot as it used too?

Last edited by jerryh3; 12-22-2009 at 08:06 AM.
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Old 12-22-2009, 08:09 AM   #5
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it seems to me that whenever the furnace kicks on the water seems to heat up..but that's not the case all the time...i did notice a change in temp in the water...but it's not consistent...this is an older house and i didn't see an anti scald mechanism....thanks for the reply.
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Old 12-22-2009, 08:11 AM   #6
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Originally Posted by jerryh3 View Post
Sorry. The plate that covers the valve. Most newer faucets have some sort of temperature limiting device. If it's a single handle valve, it's sometimes a little plastic clip that limits the travel of the handle. If you have the model number of the faucet, you could probably find the manual online and check the temp limit instructions. Did you see any difference after turning that screw? Have you checked the hot water at other faucets? Does it feel as hot as it used too?
Yea...all the other faucets are good!!! just the shower is not getting hot......

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