Question about Heating & Cooling
The moaning is something moving as the heater cools after it shuts down... it could be a pipe moving through a tight spot in a partition or just a couple of parts of the boiler rubbing together...finding the exact source could be very difficult...
Try to pin down where the noise is coming from and see if you can readjust something to decrease the friction that is causing it.
If the sound is coming internally from tthe boiler then the noise is because of a build up of over heated mineral inside the boiler. The boiler will build up mud and mineral over the years and then the burners superheat it as it trys to heat the water...
In this case the noise is an indication that the mineral build up is getting to serious levels and that the boiler may fail soon because the mineral will insulation the boiler casting from the water and there overheat and fatigue, causing it to crack....
Cleaning a boiler out that is this far built up is impossible is most cases...you should make plans to replace it soon.
Posted on May 25, 2011
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Posted on Jan 02, 2017
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