Hi Guys, I just bought a two story house that has two systems, downstairs is a museum piece.... the original gas furnace by Bryant installed in 1986, still working but I am guessing it is one reason for high gas bills shared by the sellers.
What efficiency do you suppose it was/is? I plan to do a load calc before replacing (Input, apparently 75,000 for a single floor with unfinished and unconditioned space below and heated cooled space above.... approx 1300 SF on this unit's floor. When we get moved and the rest of the hassle behind us I will replace it with something higher efficiency.
The oversized GMH95 I installed in my current home is pretty noisy, partly because of too much air being forced through old (small) ducts.
After the load calc, I am leaning toward a Rheem Super Quiet 80... or the 95 equivalent. Any of you pros recommend that brand?