Love this site, I've learned a lot just reading. I'm getting bids for a new furnace and AC in my rambler (yes, the late 50's model shoebox.) Since I'm in Minnesota, I figure the high efficiency furnace is the better option, with maybe a 13 SEER AC unit.
I'm still wavering on variable speed fans and which brand, Lennox, Bryant or Trane. From what I've read here, any of those brands should be fine. But one thing I've been told bothers me.
One salesman said that the high efficiency furnace exhaust vents A) freeze over unless you inspect them daily and B) attract small animals to come in and die, and the vents cannot be covered in any fashion! This guy also said that the PVC pipes would be sticking out about a foot from the house (and had photos!)
Now this guy was real high pressure and he is definately NOT getting my business (despite doing a manual J calc, about the only thing I liked about him), but I am quite concerned that I may be stuck with a furnace that will never allow me to leave for a day (or even a week, as another dealer told me. Funny, they were both Lennox dealers.)
So how about it, pros? Do the high efficiency furnaces have exhaust vent icing issues? If there is an issue, is it specific to Lennox, or do all models have the same problem? Or was this just a line to try to push an 80% unit on me?
Thanks for all the info on this site!