Popping air conditioning furnace

wilvon · #1 May 9, 2008, 05:04 AM

Why does my unit (attic) pop when it shuts off?

wmproop · May 9, 2008, 06:05 AM

does it sound like sheetmetel popping? does it do it when the fan shuts down or when the burners go out? woops,didn`t ask,is it a gas furnace?,,,,next question,is are you sure the filter is clean and not obstructing the air flow



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