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dogpile318
Apr 3, 2009, 11:36 AM
I have a Comfortmaker RPJ Furnace. Would like to know what year it was made and the efficiency rating. Serial No. R921500213 and Model GDH100A016IN.

twinkiedooter
Apr 3, 2009, 11:39 AM
Try contacting Comfortmaker and ask them as they would definitely know.