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Old 01-22-2011, 06:45 PM   #1
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Noisy pipes


My water heater is in my attic above my bathrooms. AFTER running hot water for a while, like a shower, when I turn ON cold water I hear loud noise that sounds like the pipes in the attic are banging on the rafters. I've been up there to witness it thinking I need to strap them down but they are not moving. In fact they are supported with pieces of foam pipe insulation so it apparently isn't the pipes hitting on wood.

Any ideas?

Thanks,
Chris

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Old 01-24-2011, 08:48 PM   #2
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Noisy pipes


is this a ranch?
Check the fill valve in the toilet?

this sounds silly but you may have thermal expansion and it is pushing on the cold lines and making the fill valve vibrate.
when this happens lift the tank lid and move the float with your hand see if it goes away or gets worse. if it does replace the fill valve and put a thermal expansion tank in. this is my guess ive seen this before this is a pressure build up and it happens on the cold side so putting the expansion tank on the cold side will help if this is the problem.
please reply id like to see if you fixed it.

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Old 01-24-2011, 09:43 PM   #3
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Noisy pipes


Sounds to me like the water heater is popping and crackling. Might be time to replace it. Especially if it's in an attic. Hard water, calcium, build up, excessive pressure, etc. could be causing your noises.
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Old 01-25-2011, 05:36 PM   #4
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Noisy pipes


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Originally Posted by LateralConcepts
Sounds to me like the water heater is popping and crackling. Might be time to replace it. Especially if it's in an attic. Hard water, calcium, build up, excessive pressure, etc. could be causing your noises.
This water heater is only about 6 years old. Could it really need replacement already?
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Old 01-25-2011, 07:01 PM   #5
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This water heater is only about 6 years old. Could it really need replacement already?
Maybe not replacement, but due for service if you haven't already. I would drain it to eliminate any sediment build-up
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