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Thread: Water Heater Service?

  1. #1

    Default Water Heater Service?

    Is there any regular servicing that needs to be done on a regular basis for an electric hot water heater? My wife is convinced that our water heater needs something done to it. I haven't noticed any issues, but she says she runs out of hot water when she's taking a shower. (Yes, she likes long showers.)

    If there is a regular servicing that needs to be done, what actually is done to the heater?

  2. #2
    Homeowner Thatguy's Avatar
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    A 2.5 GPM shower head @ 20 minutes, depending on your heater temperature setting, will take almost 50 gals of hot water.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
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    How big is the tank? What is the temperature setting on it? If you raise it, you should probably consider a tempering valve to protect people from potentially scalding water, but it will then operate as a larger tank, since you'll use less (and more cold) to achieve the same output temperature. it will also have larger standby losses. typically, you can only utilize about 75-80% of the water in the tank before it cools off too much, so a 50-gallon tank often has about 40--gallons if it is dumped quickly (the heating elements will extend the quantity a bit, but need time).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    Homeowner Thatguy's Avatar
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    My wife and I watch a lot of movies and, along with a few other symbols, the movie symbol of a person taking a shower means the person "wants to get rid of something."

    After searching the Web for a correlation between long showers and what it might mean in the real world I've decided that rather than pursuing this line of inquiry you might want to get a bigger water heater.

  5. #5
    Moderator & Master Plumber hj's Avatar
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    There is no "regular servicing" required, but if the shortness of hot water is due to a heater malfunction, then it DOES need to be repaired.

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