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I Have A High Pitched Noise Coming From My Water Heater. What Does This Mean?

We heard a somewhat high pitched noise coming from our water heater yesterday. Now, there’s a humming noise coming from the main water shutoff pipes. What does this mean?

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  1. Comment by noneya10
    October 9, 2009 @ 2:24 pm

    I think you have two seperate problems there, or is your water heater right next to the inlet pipe. When my water pipe was humminging I had a break in the line outside. If your water heater is making funny noises it is probally time to buy a new one. You can try to clean out the water heater that is what the valve is for at the bottom. They get built up inside with lime and need to be cleaned. Might want to call a plumber or your water dept.

  2. Comment by Jean f
    October 9, 2009 @ 8:51 pm

    She’s going to blow !!!

  3. Comment by the_chee
    October 10, 2009 @ 12:56 am

    The high pitched noise is telling you that your water heater is ON. When the elements are ‘on’, the water that is around the heating element heats quickly causing this ‘whine’.
    The humming noise may be resonance in the pipe. Does it stop when you grab the pipe (with a glove so not to get burned)? Does it go away when dispensing water at the sink? Are your neighbors experiencing this pipe noise too? Be sure piping is secured and insulated from touching the joists/studs of the house.

  4. Comment by NubiNDoll
    February 4, 2011 @ 9:03 pm

    Why is our newly installed water heater making thumping noises at night and not maintaining hot water? It’s a 50 gallon tank and heats 91 gallons in an hour. Most days only two people are in the home to shower.

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