I am going to have to replace my A/C very soon I'm afraid. The condenser is approx. 8 to 9 years old, 3 1/2 ton, with the evaporator in the attic 20 years or better. They are not a matched pair. I've been told my duct work will support a 4 ton, which I will upgrade to. I have gas heat now and will probably stay with that instead of changing to a heat pump. I'm afraid since I've always had gas heat I could not get used to a heat pump. I would like to go with a 14 to 15 seer condenser and maybe 95% furnace. My home is very insulated and I continue to get huge power bills in the summer. We have ceiling fans and leave the thermostat on 78 degrees. I think it is a combination of old and mismatched units.
With all the brands on the market today, which is the best for the money. I'm in SE Georgia, and Nordyne is a big brand here. Also Comfortmaker and Trane.
Any input would help.