Hi all, I found this website and wanted to get some advice from others who are more knowledgeable than I am. Firstly, I am in Houston TX, so it gets a little warm here. We are building a new home (not custom, new construction) and the house will be what I'd consider energy efficient (radiant barrier, dual paned windows, etc) - it could be MORE energy efficient, but it's very good. It's a two-story ~4300 sq ft home. We'll have one outdoor AC unit for upstairs, another unit for downstairs.
The builder uses Carrier for the HVAC system (this is set in stone, no flexibility). The base outside AC unit is likely this line: http://www.residential.carrier.com/p.../comfort.shtml
The upgrade would be to this: http://www.residential.carrier.com/p...formance.shtml, the 24ACB7 condenser and the 58PHA furnace.
Comparison chart: http://www.residential.carrier.com/p...mparison.shtml
The total upgrade price is an extra $, which is what I am unsure about. My gut is that we're getting gouged and should save the money for when the base unit goes out in the future.
Obviously it's a numbers game - if the cost savings outweigh the upgrade cost by a reasonable amount, then we should do it.