Thanks for the info from everyone. Finally needed to replace the furnace this week, and it is being installed right now. I ended up going with Gross, who had installed the original furnace in this property 20 years ago. Met with several companies and they still came out on top and treated me well from the get go. Fortunately I met with enough companies to recognize the one who was trying to take advantage of me. It turned out my furnace qualified for a $975 trade in allowance, which is reimbursed to the dealer, not to me, so it just comes off my bill. All but one dealer I talked to told me about this yesterday. Oddly enough, that dealer's cost were about $400 less than all the other quotes I had. Seems to me he was hoping to quietly pocket $575. And that's just the most egregious thing that company did, to say nothing of how they tried to tell me a higher-end model was a mid-range model, and that their quote for an AC unit, while the same as everyone else's for a mid-range cost wise, was a lower-end model if you looked at the specs.