my current consensus configuration:
80% AFUE standard 90000 btu gas furnace and a 10 SEER 3ton outdoor unit - pending a full load calc.
I've decided that the 90% unit is out because for the cost to upgrade to a 90% (about $600 more) I could get a heat-pump (about $450 more) and save more on the total energy bill.
Any thoughts on what the cost savings would be with a heat-pump in a moderately cold area like Delaware?
also - does the fact that I'm using a heat pump for the 40F to 60F mean that the unit will run longer and it'll be more compfortable than the same job being done instead by the gas furnace?
thanks in advance....