goodman gmpn080-4 problem
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goodman gmpn080-4 problem
this furnace has been making a gurgling sound since last fall. it seems the noise is coming from inside the furnace. I checked all the condensate drains and lines and they are all open an draining as they should. I pulled the blower out and it seems to be smooth and quiet. anyone here have an idea what would make this sound? also has anyone here dissassemble on of these furnaces? do you need to remove the furnace to remove the heat exchanger or does it come out the front of the cabinet? this noise starts about a minute after the main blower starts running and sounds like air bubbling through water somewhere. thanks in advance.