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General_Payne
Lv 5
General_Payne asked in Home & GardenMaintenance & Repairs · 1 decade ago

Hot Water System Question?

Hi all,

I've recently purchased an older property (1960's) which features a newly renovated bathroom (approx. 3 years old) and older hot water system.

Whenever I take a shower, the water temperature is virtually impossible to adjust as the temperature is continually fluctuating. When I run just the hot water, the heat stays for a very long time but as soon as I introduce cold water, the water temp fluctuates and turns cold after a while. It's as if a controlling mechanism is malfunctioning or not installed.

Does anyone have any ideas what the problem may be? I'm not expecting to fix it myself but I'd like to at least know what the problem is.

Thanks for your help.

Andrew

4 Answers

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  • Ken S
    1 decade ago
    Favorite Answer

    hmmmm I assume you have a single handle shower control?

    If so it may have been made beforpressurerbalancece technology. If so change the valve to pressurerbalancece type of valve.

    If it ipressuresbalanceance valve its in need of repair bProfessionalonal.

    Ken

    Source(s): http://.simsplumbing.com/
  • Anonymous
    1 decade ago

    If you are talking about a gas instantaneous HWS they have a rubber diaphragm that should be replaced every 5 years or so. When you turn on the hot tap water pushes up on the diaphragm which in turn pushes up a valve to open the gas supply, & the diaphragm perishes over time. If it is the original system from the 60's you should consider replacing it as it not up to current safety specs.Also, With this type of machine, you need to turn the hot tap on fully, wait till its hot then introduce cold water slowly, if you turn the cold water on too fast you lose the pressure that's holding up the diaphragm & the flame dies.

  • Eminence Vox
    Lv 4
    1 decade ago

    Does the shower have an anti scald valve? That what it sounds like. It is a mechanism in the valve that prevents the water from becoming too hot.

  • 3amcontractor
    1 decade ago

    Sounds like you have an anti-scald protector installed. Pull the escutcheon and remove it, or pay a plumber $ 75 to do it.

    Hope this helps

    Source(s): Gen. Contractor
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