My contractor is suggesting that I not use a dual fuel system (high efficiency heat pump w/natural gas backup) due to the higher investment in the dual fuel versus the heat pump w/backup strips.
My new home is in Chattanooga where we have a mild climate, will be 2700 sq ft (up and down), all brick, lots of windows and built to the strictest energy efficiency codes. The local power company is offering incentives.
I did a quick calculation using the local TVA's web site and see that the annual heating/cooling costs are virtually the same with or without the gas furnace as a backup.
What do you all think?