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  1. #1
    Join Date
    Jan 2010
    Posts
    13

    Default Random Noise in our Water pipes -help nothing is fixing the problem

    This all started in May... one night our pipes started banging so loud it felt that our townhouse was going to burst. We tried to shut off the main water supply to our house and the noise seem to quiet down but the noise did not stop but only seemed as if the sound was below the main shut off rather than above. The next morning we called a plumber and was informed it must be our Pressure reducing valve that needed to be replaced. So we replaced it at the tune of $500. and the noise seemed as if it stopped. However, a day later we heard the noise again - not as loud but we could still hear it. We would explain the noise as if it was a clanging in the pipes. We called the plumber back and he came back to the house - checked the prv - it was ok, set the pressure to 55 psi, and checked the balls in the cold pipe leading to the water heater. Everything seemed fine. The plumber left and really did not do anything different and the noise went away. A few weeks later we started getting some rumbling in our pipes but nothing to kept us awake at night. But a few weeks later - that noise went away too.

    Now on Dec. 1st. We got the awful noise in our pipes just continues banging and what could be described as water hammering. The county came out to check our meter (o yah - the put a new meter in back in May) and the meter was fine but when the guy from the county came out he checked our water pressure and he explained that he turned the water on it would register 55 psi but when he flushed a toilet it dropped to 0. He said we needed to replace our PRV.

    So we called the plumber back and they replaced it for free since it was covered under warrenty. A day later we heard the noise again - called the plumbers back and yet when he came back the next day the noise stopped and we didn't hear it for a while.

    Now about two weeks later we hear what we would describe as a roaring in our pipes. We read something about flushing out our water heater - so we did. The noise kept on going. Now we get the roaring (the plumber actually heard the noise for the first time last week and he described it as blowing in the pipes) followed by clanging. We hear the noise a lot at night but we also hear it throughout the day. We have replaced all of our toilets with flowmasters.
    The plumber was here last week and put a gage on our water heater as we were talking the psi raised to 90 and then the noise started. He quickly turned the valve off to the cold water side of the water heater but the noise kept going. He turned the main shut off valve off (we have the old fashion I think called gate and not a lever) and yet the noise continued for a little bit.

    O yah - I forgot to mention that at times the cold water pipe on the water heater will get burning hot even up before the valve.

    We are at the point of putting on an expansion tank on the water heater - and replacing the gate valve with a lever. We really don't know what else the problem could be that is causing this noise in our pipes.

    Please help us figure this out. Again - the noise can happen at any point of the day not necessarily related to water running.

    We have caught a little bit of the noise on youtube however at times the noise can get louder and with more banging
    http://www.youtube.com/watch?v=iKzANek06kQ
    Last edited by carrie8327@aol.com; 01-21-2010 at 08:34 PM.

  2. #2
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: Random Noise in our Water pipes - Challenge

    Quote Originally Posted by carrie8327@aol.com View Post
    This all started in May... one night our pipes started banging so loud it felt that our townhouse was going to burst. We tried to shut off the main water supply to our house and the noise seem to quiet down but the noise did not stop but only seemed as if the sound was below the main shut off rather than above. The next morning we called a plumber and was informed it must be our Pressure reducing valve that needed to be replaced. So we replaced it at the tune of $500. and the noise seemed as if it stopped. However, a day later we heard the noise again - not as loud but we could still hear it. We would explain the noise as if it was a clanging in the pipes. We called the plumber back and he came back to the house - checked the prv - it was ok, set the pressure to 55 psi, and checked the balls in the cold pipe leading to the water heater. Everything seemed fine. The plumber left and really did not do anything different and the noise went away. A few weeks later we started getting some rumbling in our pipes but nothing to kept us awake at night. But a few weeks later - that noise went away too.

    Now on Dec. 1st. We got the awful noise in our pipes just continues banging and what could be described as water hammering. The county came out to check our meter (o yah - the put a new meter in back in May) and the meter was fine but when the guy from the county came out he checked our water pressure and he explained that he turned the water on it would register 55 psi but when he flushed a toilet it dropped to 0. He said we needed to replace our PRV.

    So we called the plumber back and they replaced it for free since it was covered under warrenty. A day later we heard the noise again - called the plumbers back and yet when he came back the next day the noise stopped and we didn't hear it for a while.

    Now about two weeks later we hear what we would describe as a roaring in our pipes. We read something about flushing out our water heater - so we did. The noise kept on going. Now we get the roaring (the plumber actually heard the noise for the first time last week and he described it as blowing in the pipes) followed by clanging. We hear the noise a lot at night but we also hear it throughout the day. We have replaced all of our toilets with flowmasters.
    The plumber was here last week and put a gage on our water heater as we were talking the psi raised to 90 and then the noise started. He quickly turned the valve off to the cold water side of the water heater but the noise kept going. He turned the main shut off valve off (we have the old fashion I think called gate and not a lever) and yet the noise continued for a little bit.

    O yah - I forgot to mention that at times the cold water pipe on the water heater will get burning hot even up before the valve.

    We are at the point of putting on an expansion tank on the water heater - and replacing the gate valve with a lever. We really don't know what else the problem could be that is causing this noise in our pipes.

    Please help us figure this out. Again - the noise can happen at any point of the day not necessarily related to water running.

    We have caught a little bit of the noise on youtube however at times the noise can get louder and with more banging
    http://www.youtube.com/watch?v=iKzANek06kQ
    It would seem the expansion tank is needed alright.
    I'm also wondering if you also have loose piping that's causing the clanking noise.
    "" an ounce of perception -- a pound of obscure "
    - Rush

  3. #3
    Join Date
    Jan 2010
    Posts
    163

    Default Re: Random Noise in our Water pipes - Challenge

    It's strange that the noise will continue even after the main supply is shut off. This indicates that the noise may not be due to hydraulic action, that is, water flowing in the system.

    It may be that the water heater is the culprit.

    To at least eliminate the WH as one possible source, do a simple test: turn down the thermostat on the WH to its lowest setting so that it does not heat during the night (or during the day), and see if the noise goes away when it's not heating. Leave both the main valve and the WH valve on. The only thing you will be changing is that you will not allow the WH to heat.

    If the noise goes away under these conditions, it means that the WH tank is encrusted with hard water deposits, which trap pockets of water that explode into steam as the WH re-heats the water and nears its highest temperature.
    Last edited by rdesigns; 01-19-2010 at 09:59 AM.

  4. #4
    Join Date
    Jan 2010
    Posts
    13

    Default Re: Random Noise in our Water pipes - Challenge

    We just found out that our neighbor's (we have a townhouse) furnace humidifier valve is stuck open. (the house connected to ours has been vacant for the past month.) My plumber thinks that the problem could be their furnace humidifier putting pressure on our lines. We will keep everyone posted as the realtor will be fixing the problem today or tomorrow. Lets pray the noise stops with them fixing the stuck valve.

  5. #5
    Join Date
    Jan 2010
    Posts
    13

    Default Re: Random Noise in our Water pipes - Challenge - Help nothing is working

    We have tried everything. We have turned our neighbors house's water off - we still hear the noise. Our plumber suggested that it could be their furnace banging on our pipes. We turned the furnace up in their house - we hear nothing. Our walls are divided by a firewall. The noise happens at random, mostly at night. I called our heating a cooling spe******t and he suggested that we cut the water pipe off at the main line for the day and wait to see if we hear the noise. If we don't then it has to be a vibration problem between our house and the street. If we hear the noise then he suggest that something in our home is banging on our pipes. He mentioned briefly about our flue on our water heater. We just can't find the answer, please help....
    Last edited by carrie8327@aol.com; 01-21-2010 at 08:35 PM.

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