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-   -   Knocking/clicking when gas water heater cycles on (http://www.houserepairtalk.com/f33/knocking-clicking-when-gas-water-heater-cycles-13328/)

rgcchun 02-27-2012 08:29 PM

Knocking/clicking when gas water heater cycles on
 
Everytime the new power vented gas water heater cycles on, there is a knocking/clicking sound that comes up every four seconds or so which appears to be coming from the 3" PVC exhaust pipe from the water heater to the outside. I am guessing the hot air is expanding the pipe, but I don't know what to do about it. In fact, I don't even know who to call to make the repair. A plumber, HVAC guy, General contractor or someone else. Can somebody help me out?

inspectorD 02-28-2012 05:07 AM

Hmm
 
Call your HVAC company. Most likely water from the exaust getting in the way, but nothing to mess around with if you are not farmiliar with the system.
Let us know what it turns out to be, it just might helps others.:)

isola96 02-28-2012 06:55 AM

Sounds like its anchored to tight agents something like metal brackets holding it? get a hvac guy to come sounds like a simple fix.

rgcchun 02-29-2012 07:04 AM

Thanks for the advice
 
Thank you for your replies. I will contact my HVAC guy and hopefully he can solve this issue. The problem I have is that the basement is finished and the ceiling is drywalled.


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