My wife and I recently retired, and are moving from northern IL to the beach area of southeastern DE. We're in the process of building a house there, and it will be completed by October. The lower area of DE doesn't have natural gas yet -- only propane -- which is very expensive.
The builder has offered us an option of having a "duel fuel" HVAC system installed, consisting of a Trane heat pump and gas furnace. Having lived in the South before, I'm inclined to go with that option.
He's offering us 2 sizes: a 13 SEER and a 16 SEER. I'm still fuzzy on the advantages of having a larger unit, even after reading numerous articles on the internet; would appreciate any professional advice and explanations. Our home has 2 floors, is approximately 3,100 sq. ft., and has a footprint climate- controlled crawlspace with a concrete base.
The Trane model nos. are as follows:
For the 13 SEER unit:
T4TWB3060B1000B Heat Pump Condenser
TTUH1D120A9601A Gas Furnace
For the 16 SEER unit:
T4TWX3060B1000B Heat Pump Condenser
TTUH2D120A9V5VA Gas Furnace
I've had Trane HVAC systems before, and they've been very reliable. Any professional opinions regarding the above items? We don't have a choice of manufacturers.
Thanks for any assistance!