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Old 10-18-2012, 02:24 PM   #1
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Hot water going instantly Cold


Whenever the shower is running and something as little as the kitchen faucet is turned on the shower water goes instantly cold. Any thoughts on why this might happen?

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Old 10-18-2012, 02:38 PM   #2
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Hot water going instantly Cold


The faucet is turned on cold or hot in the other room?

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Old 10-18-2012, 02:44 PM   #3
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Hot water going instantly Cold


New house to you?
What size are the main runs?
Single or double handle faucet?
About how old is it.
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Old 10-18-2012, 02:58 PM   #4
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Hot water going instantly Cold


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Originally Posted by pwgsx View Post
The faucet is turned on cold or hot in the other room?
Either way the same thing happens.
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Old 10-18-2012, 02:59 PM   #5
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Hot water going instantly Cold


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New house to you?
What size are the main runs?
Single or double handle faucet?
About how old is it.
New house to me yes. Built 1961
If I had to guess Id say 1.5" is the main line coming in to the house. All other pipes look the same size. I can measure later today.
Single handle faucet in the shower.
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Old 10-18-2012, 07:36 PM   #6
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Hot water going instantly Cold


The preasure balancing cartridge in the shower is faulty---change the shower cartridge--

Let us know the brand and we'll walk you through it---If the house is new---call the builder---simple,quick fix usually---
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Old 12-13-2012, 09:21 AM   #7
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The preasure balancing cartridge in the shower is faulty---change the shower cartridge--

Let us know the brand and we'll walk you through it---If the house is new---call the builder---simple,quick fix usually---
sorry it took so long to get some of this information back to you guys. here is a picture of the unit I took this morning. I'm still not quite sure which brand it is. also what would I do to make this bad dripping stop
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Old 12-13-2012, 11:36 AM   #8
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Hot water going instantly Cold


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New house to you?
What size are the main runs?
Single or double handle faucet?
About how old is it.
And my house main is 3/4" copper pipe. It is immediately sized down to 1/2" throughout the rest of the house.
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Old 12-14-2012, 02:13 PM   #9
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Hot water going instantly Cold


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And my house main is 3/4" copper pipe. It is immediately sized down to 1/2" throughout the rest of the house.
That small piping may be a contributor, but I agree with oh'mike, a new pressure balance cartridge is in order.

That looks like it might be a Moentrol, but I will let someone with more experience confirm or deny.
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Old 12-14-2012, 07:22 PM   #10
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Hot water going instantly Cold


mike is ontop of this one.....change out cartridge in shower 1st . its a moen...ben sr
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Old 12-14-2012, 07:53 PM   #11
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Hot water going instantly Cold


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mike is ontop of this one.....change out cartridge in shower 1st . its a moen...ben sr
Would you mind terribly explaining how?
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Old 12-14-2012, 09:09 PM   #12
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Hot water going instantly Cold


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Would you mind terribly explaining how?
http://www.youtube.com/results?searc...place+moentrol
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Old 12-14-2012, 09:52 PM   #13
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Cool thanks ill check it out
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Old 12-14-2012, 09:54 PM   #14
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Hot water going instantly Cold


Turn off the water at the main---

Remove the handle---and the big cover plate---you will see a horseshoe shaped clip that is in
front of the valve body--lift that out---attach a Moen cartridge puller to the stem--

-turn the handle on the puller----cartridge should pull right out---(sometimes you will need to crank the handle back and slip an open crescent wrench under the puller,as a spacer to complete the pull)

Roll up some sand paper and lightly sand the inside of the valve body---rinse out the grit--

Lubricate your new cartridge and install---replace clip---put cover and handle back on---
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Old 12-14-2012, 10:18 PM   #15
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Hot water going instantly Cold


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Originally Posted by oh'mike View Post
Turn off the water at the main---

Remove the handle---and the big cover plate---you will see a horseshoe shaped clip that is in
front of the valve body--lift that out---attach a Moen cartridge puller to the stem--

-turn the handle on the puller----cartridge should pull right out---(sometimes you will need to crank the handle back and slip an open crescent wrench under the puller,as a spacer to complete the pull)

Roll up some sand paper and lightly sand the inside of the valve body---rinse out the grit--

Lubricate your new cartridge and install---replace clip---put cover and handle back on---
Right on! Thanks a bunch. Ill let you know how it goes. Can I get this catridge at big box?

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