Our Ac is zoned and the main unit has gone to heaven. We are currently getting by (barely) on the secondary unit (2.5 ton) that is designed to supplement the upper loft and 3 bedrooms. Our main unit is 3.5 tons and came with the house built in 1999. It has been checked out and is rated at 8 seer but may be performing a little less than that. We live in a suburb of Kansas City and it is sizzling as it often does here in Kansas in the summer. We also have the added sauna quality air and need relief. Our home is 3100 sq. ft.

We have asked for Carrier units and have been quoted for the following. Each # corresponds with the furnace that was associated with the Ac or Heat Pump. I would like to have a heat pump in place of our traditional AC/Furnace system, so I am leaning towards the last quote. I would also entertain the higher efficiency Carrier unit (not quoted) if the price were right.

Model Number

#1 24ACB442A003

#2 25HCB342A003

#3 24ANA748A003

#4 24ANA748A003

#5 25HNA648A003

Furnace Model #

#1 58CVA110-1-20

#2 58CVA090-1-16

#3 58CVA110-1-20

#4 58MVC100-F-1-20

#5 58MVC100-F-1-20

Cost before credits/ rebates

#1 $6,998

#2 $7,496

#3 $8,682

#4 $9,979

#5 $10,745

What are your thoughts? Are these reasonable units to consider? We are eventually going to replace the secondary unit but are waiting since it is rarely in use.

Our current unit is a builders grade unit that was a product "manufactured" by Lennox but with a different label. (SX-80 furnace?)