New water heater and new problem???

Discussion in 'Water Heater Forum, Tanks' started by Brockman1, Mar 25, 2009.

  1. Brockman1

    Brockman1 New Member

    Messages:
    2
    Hope someone can give me some advice on this issue. I had a new water heater installed and ever since when we use any water in the house anywhere the pipes rattle after the spout is turned off. Why is this happening since it did not do this before installation. How can I fix it without calling back the repairman? Thanks in advance....
  2. kingsotall

    kingsotall Plunger/TurdPuncher

    Just on the hot side¿
  3. nail down the pipes

    pipes usually rattel becasue they are loose somewhere and
    are doing a water hammer sort of thing...

    the man probably did not notice that their was a gap
    in the lines after the new heater went in


    all you should have to do is get some pipe clamps or some wire and nails and simply secure the pipes down better around the water heater....

    odds are that is all it is....
  4. Brockman1

    Brockman1 New Member

    Messages:
    2
    it actually sounds like the pipes in the walls are rattling and that wasn't the case before hand. Could I have air in the pipes? Both hot and cold rattle after water is turned off. Even the little bit of water used to fill the ice machine back after dumping causes the pipes to rattle. Any thoughts?
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,129
    Location:
    New England
    What's your water pressure? Are the supply valves to the house and WH fully open?

    It sounds like somewhere the pipes aren't clamped down well. The plumber may have removed or loosened one or more to get the new WH installed, then failed to replace or tighten them. Just like when you take your foot off the accellerator in your car it doesn't immediately stop, the water, once moving tries to keep going. It's sort of like hitting a brick wall when a valve is turned off quickly..the water tries to keep going, and can't through the now closed valve, so the pipe moves to disipate the energy. You need to either clamp the lines so they can't jump and bang into things, or install hammer arrestors. The whole thing gets worse if the pressure is high...it's like hitting a wall at 60mph verses 1mph.
  6. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    Check for a loose washer on the valve you used to turn off the water to the water heater when it was changed...
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,811
    Location:
    Cave Creek, Arizona
    ???

    Loose washer in the valve to a water heater? That would imply a globe valve and they are not supposed to be used for a water heater, and any REPUTABLE installer would have replaced it if there were one there. It could be flow controls in the heater connections.
  8. Redwood

    Redwood Master Plumber

    Messages:
    7,450
    Location:
    Connecticut
    Well, we sometimes find the difference between a perfect world and the real world...
  9. Cass

    Cass Plumber

    Messages:
    5,980
    Location:
    Ohio
    Did you have the old heater installed or was it there when you bought the home?

    I bet the dialetric was rusted 1/2 way or more closed reducing the flow and not allowing the pipes to vibrate...until it was replaced and there was good flow once again...
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