|Posted by hj on May 15, 2004 at 09:51:18:|
|In response to Re: Knocking in pipes after water heater replacement|
That one plumber, if he had been a good one, would have known that there was no problem with air in the line, so he apparently installed a superfluous item and charged you for doing so. The heater may have malfunctioning "heat traps" in it which could cause the sound.
: We had our water heater professionally replaced with an A.O. Smith Conservationist 40-gallon tank in 1999.
: As soon as this unit was put in place, we get frequent loud knocking/rattling in our pipes when the water is running. It is the worst when cold and hot are on at the same location (i.e. the washing machine on "warm").
: Our plumber who put it in said we have a loose pipe somewhere, but why would this have started the day he put in the tank? All pipes around it are tight as can be.
: Another plumber thought it was air in the line, so he installed a baffle in the line...and this didn't help at all. We recently had our water pressure reducer replaced, and this didn't make a difference either.
: Thanks for any advice you can provide!
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