Existing system: Furnace - 25 years old
A/C - 20 years old
The furnace works fine but A/C does not cool (needs recharging).
Since the furnace is probably overdue to be replace, I have decided to replace both the furnace and the A/C with more efficent Heat/Pump and variable speed air control (gas furnace, %80 - %90 AFUE). I am trying to determine which system combination would save me the most in combined fuel cost.
Is there a web site that I can input the SEER, AFUE, the energy cost (gas and electric) and the zone for which I live in and give me the operating cost. I have hear of one that can calculate pay back time, but can not locate it. It would be nice if the site would allow me to compare two systems (existing and new for example). I live in Minnesota and I am wondering if a heat pump is worth it. Or should I replace the furnace with a 92 plus AFUE.
I am open for any suggestion.
Ex Texan in Minnesota