Reading a lot of interesting thoughts regarding getting a room by room "manuel J" analysis done. My question - is this normally considered part of a contractors bidding process or is this something out of the norm and that I'd pay for separately from their bid?

My one (and only so far) bidder simply looked at my existing furnace and recommended a replacement. Hence my concern that I may not have enough return ducting to accommodate a large increase in CFM.

thanx for any help.