Thank you all for the feedback on my other posting. I feel wary of Amana even with the Lifetime warranty so I believe I will be going with a Trane system. Here are the 3-ton 13-seer specs: A/C Condenser XR80 - 4TTR3036 , Coil 4TXCD36 matched with a XL80 Furnace TUD1B080A936.
The question is would it make since to use the Atlanta Gas Light Rebate of $250 to upgrade to a 90% AFUE Furnace? What would be the time to recoup the costs?
With gas prices going up would it be worth upgrading the furnace instead of going with a dual fuel combo?