I've had 3 techs out to look at my needs for a new furnace. One guy I didn't like at all, the other two told me just about the same thing..
1) ducting is correct for the house
2) the air filter is a little small, suggest upgrading to a 4" thick pleated to get more filter area
3) I am right in the middle between at 90K input BTU and a 70K size-wise..
4) my current 92K 90% is sized okay, but a little bit big.
5) both suggest either a Goodman GMH or a Goodman GMVC, both will work fine but the VC may provide better comfort because of the true multistage.
One guy would put in the 90 regardless which furnace I went with, the other guy would do the 70 if I chose the GMH and the 90 if I chose the GMVC, saying that since it has a true low stage, if the 90 was a little bit big it wouldn't matter much. The 70 might struggle some if we had a stretch of extremely cold weather (like below zero around the clock). He also liked the more blower ability of the 90 to work with the 3 ton AC, which will not be replaced at this time. If I went with the 70, he suggested the bigger blower to make sure their was enough flow for the AC, to get to the furthest bedroom as best as possible.
So my questions are:
Is it worth the extra cash for the VC, and regardless which I choose, should I go with the 70 or the 90 btu.? Thanks for any response..