I used -1 as a defalut in the program and got 45417 BTUH heat lose. So now I'm positive I don't need more than a 60.For houses OF is a typical outdoor design condition in TO area, for a commercial building they would use -3F.
Isn't it what the variable speed motor in Bryant 355AAV for? To be adjusted to the right air flow? By the way the more I read about Rheem the more I like it. I started from York modulating. It seems like Rheem RGFD can be a good match. Shouldn't it handle the air flow problems even better? One thing that put me off a little is that for some reasong Rheem is not that popular in Canada comparing to Goodman and various Carrier brands. I'm afraid that there could be a problem to find contractors if this one goes out of business or find parts.A new furnace will move more air, more air in same ducts means more noise
thanks for the explanation, but what does it actually do? Does it bring fresh air from the outside? If yes, is this the job the furnace installer can do?(without a ventilation upgrade)