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Hot water pipe loses pressure and whines in shower

When I'm showering in the winter months (when I need more hot water) my shower suddenly loses pressure and the hot water decreases. It also whines when this happens. This started happening last winter. The only thing different that I can think of is that I installed a 'reverse osmosis' water filter under my kitchen sink...I have no idea if this has something to do with the problem but it's the only thing that would have changed in my house. I live in a mobile home. What can I do to correct this? I'm tired of cool showers in the winter months.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 171 Answers

SOURCE: shower too hot

Hi sallypenn

I'm Harvey the Master Plumber.

Your question seems to be how to adjust the temperature of a shower valve?

I'm going to assume this is a single handle faucet. Most are adjustable under the handle. This is the responsibility of the installer but sometimes they forget and you can't get them back. Anyway this requires a little mechanical ability and a few tools.
First be sure to turn off the water to the faucet, then remove the handle (allen wrench or small screw driver). Most have a temp. adjustment ring right there. Simply pull out, rotate and replace. With some you have to remove the sleeve or bonnet under the handle to expose the adjustment fitting. Reasemble and turn on. It is not uncommon to have to do this two or three times before the customer is happy with the setting. The adjustment fittings usually don't have tenp. setting numbers to go by so it might take a few tries.

Feel free contact me again!
Please give me a rating here at fixya.com before you sign off
Thank you,
Harvey your Master Plumber

Posted on Sep 10, 2008

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  • 8 Answers

SOURCE: Shower goes hot and cold

If you are having trouble only at the one fixture (shower), and no where else, the problem is most likely in the shower valve...which either needs new cartridges, or a complete replacement.
hope this helps

Posted on Jan 08, 2009

  • 34 Answers

SOURCE: triton t80i water only warm in winter

That sounds like a water heater problem, wheres the heater at in your home. If it is effected by the outside weather i.e. the heater is in a cold environment then it would effect the hot water output. try turning up the thermostat on the heater if it is gas then it should be knob on the outside if it is electric you will need to remove the top or the bottom cover and adjust it with a screw driver. If this does not work the let me know and we try some other things. With the weather/temp outside effecting the water temp in the shower then I have a hard time believing it is the shower its self.

Posted on Feb 06, 2009

  • 297 Answers

SOURCE: Insufficient hot water from Gledhill pulsacoil 2000

changing the shower head will not do anything.to do what you want,you would need more BTU's or a bigger unit to supply more water,someone may be hogging the water also.

Posted on Jul 26, 2009

  • 12650 Answers

SOURCE: When turning on the shower faucet there is no hot water.

adjust ur anti scold the setting is set to low when single handle shower units are shipped they are set in cold mode for safety ur install/instructional paperwork explains such and also advises on how to adjust---remove handle and on shaft will see a blue and red plastic clips that are adjustable slide towards u and move red for more hot water test water continue till comfort level is reached for hot water

Posted on Mar 24, 2010

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As for the noise, when you had the old cart out, did you flush out the faucet by turning in the water for a few seconds after removing the old one? This is a four hand job, one to control the water gushing out of the faucet and the other to conrol the shutoffs.
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http://waterheatertimer.org/Low-hot-water-pressure.html

2) If the cold water has good pressure, then Electric shower could fix problem ... but shower would have to be connected to the cold water line and not the hot.

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