Question about Heating & Cooling
Gmh95/gch9 manual calls for 3 inch exhaust pipe? 3 inch seems large for a 90k btu..I was going to run 2 inch book says 3...the run is about 18 feet..Thanks!
Furnaces must be vented EXACTLY as specified by the mfr or you WILL have problems - they spend a lot of time and money coming up with those specs. then design the furnace based on them.
Posted on Oct 07, 2009
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Posted on Jan 02, 2017
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