We are near Kansas City and I can count on one hand the number of 100k, 90% gas furnaces we've installed in a residential home in 30 years. You must have a REALLY big house, or you're buying just what you are replacing....trouble. When purchasing a 90% furnace, DON'T oversize it, that way you actually get 90% efficiency and the furnace will last much longer. Has anyone actually done a heat load (manual J) on this house? Is your ductwork sized to deliver 2000 cfm??? I'm betting "no" to both. I feel sorry for you if you actually own a house that loses 90,000 BTU/Hour of heat. Even with this 90% furnace, you going to have a HORRIBLE gas bill!!! If your HVAC guy is sizing the furnace by measuring the doors to the furnace area.......RUN!!!!! If your HVAC guy is sizing furnace by standing in driveway with thumb in air (and squinting)...RUN FASTER!!!!