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Mallard1123 10-10-2012 05:18 PM

I just bought a new house and redid the bathroom. When I turn the hot water on there is a popping noise in the pipes for the first 20 seconds and then it stops. It does not do this at all with the cold water. what could be causing this? The noise sounds like an igniter trying to light something, but it is not an igniter in my heater.

joecaption 10-10-2012 05:24 PM

Where not there to hear it it, but when calcium builds up the the bottom of a water heater it pops loose when it gets heated. It will sond like a popcorn popper if it's really bad.
A water heater needs to have a hose connect to the bottom of it about every 6 months to drain off some of the solids that build up on the bottom.
I'd bet that 99 % of home owners have never drained off the soilds since they have owned the house.

Mallard1123 10-10-2012 05:25 PM

I just installed a brand new hot water heater two weeks ago. This only does it in my bathroom.

TheEplumber 10-10-2012 07:20 PM

Quote:

Originally Posted by Mallard1123 (Post 1028316)
I just bought a new house and redid the bathroom. When I turn the hot water on there is a popping noise in the pipes for the first 20 seconds and then it stops. It does not do this at all with the cold water. what could be causing this? The noise sounds like an igniter trying to light something, but it is not an igniter in my heater.

Sounds like pipe expansion- especially on the hot water side or the drain expanding due to hw. The pipe is rubbing on wood as it expands- just a guess

plumberinlaw 10-12-2012 11:53 AM

Yup, thermal expansion.

Mallard1123 10-17-2012 11:00 PM

Ok thanks


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