I've had several local dealers quote on replacing my 20 year old 10 SEER 2-1/2 ton A/C with a heat pump. My existing propane furnace is a five year old American Standard Freedom 90 Comfort-R with variable speed. All of the dealers have told me that I should be able to achieve maximum efficiency with the furnace I have.
At this point, I am leaning toward the Trane dealer who has quote two different 2-1/2 ton options each using a matched Trane all-aluminum comfort coil:
XR13 Heat Pump
XL15i Heat Pump
As I understand it, I should see around 14 SEER using the XR13 or 16 SEER using the XL15i. Also, I understand the heating ability of the XL15i is a bit better. But I am really having a hard time deciding if the 15 is worth the additional cost in Southern Ohio. My electric rate is about ten cents per kW hour so at that rate the the pure return on investment based on efficiency doesn't seem to be there. If the rates go up significantly, the number look better. I know the warranty on the XL15i is 12 vs 10 years on the XR13. But are there other reasons that I should spend the extra dollars (build quality, life expectancy, comfort, etc.)?