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Posted by Zephyr on March 5, 2007, 12:42 am
In the older days, heat exchangers might "oil can", but I haven't heard on
doing that in many years. I'd bet it's something else. Check to see if the
blower wheel is tight to the shaft. Or something ....
--
Zyp
>
> > 10 year old Armstrong gas forced air furnace makes a muffled boom
> > noise 10-15 seconds before blower turns off after a heating cycle.
> > Service man states its the heat exchanger. Company will warranty the
> > part but not cost to replace $200-$300 labor. Have been told its not a
> > safety issue but an asthetic one. Any thoughts on this? Thanks in
> > advance, Jim
>
>
> My thoughts are "not likely"...
>
> ...it'd be a new one in the book if it were true.
>
>
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