Two phase question. I am looking to replace the Htg/ac units in my Atlanta, Ga home. current units are 18 years old and have been very reliable - Tempstar 5000.

1. I am thinking about a dual fuel hp/80% furnace. I hear hp's are more efficient but Atlanta can be cold - at least to my southern bones - and gas is pretty cheap here. Is this a good approach vs gas furnace and ac?

2. The first contractor to give me a bid is in love with Heil equipment. He has proposed:

upstairs unit

Heil 15 seer Dual Fuel

HXH536GKA heatpump

END4X37T17A upflow coil

G8MXN0701716A gas furnace

lower unit

HXH524GKA heat pump

END4X30T17A upflow coil

G8MXN0701716A

Contractor would need to replace one of the current lines and states that he can flush the current 3/8 line and reuse.

With digital thermostats, dual fuel controls and 2 4" Honeywell media filters, sightglass on the refrig line. Some reworking of existing ductlines and sealing seams on returns.

Installed quote is $11,587.

I will be getting other quotes but I am not familiar with Heil and I cannot find info on these specific units any info would be appreciated.