Man J ??
Condensing
Why not on the heat pump?
Not much time for good responses,Debbie.
This two-stage seems to be an excellent idea, wish I had it.
The HVAC company's engineer should be able to help improve the design.

Earthworm, thanks for your response. Yes there were 2 seperate Manual J Load Calculations done, both said I need a 3 ton. Furnace is 2 stage, Var.Speed. Yes, I know HP is recommended for this region, however, we decided to go straight a/c and gas furnace as that is what we've always had, and HP heat before gas temp comes on is a bit cooler at first instead of warm from the start like gas is. Hubby can't get on board with HP. I would love to hear from Tigerdunes and RyanHughes on this system as well as any other opinions out there. Thank you

debnmike

you are going down in size on your cooling AC condenser. You are comfortable with that and a load calculation in writing supports that decision?

this is really a heck of a nice system at a good price.

I do think that the HP condenser mdl is a worthy consideration especially with an 80% eff furnace.. I would also recommend a good 4-5" pleated filter media cabinet. You do want to get another return that actually works and is strategically located for good airflow movement in your home.

now to the negative. I do not like third party coils period. The ATA tin plated Carrier coil is a better selection. There are actually two mdls that allow for tax credit qualification. see below.

4230282 Active Systems PERFORMANCE 17 PURON AC CARRIER AIR CONDITIONING 24APA736A30 CNPH*4321A**+UI 58CV(A,X)070-12 37000 13.00 17.00 1

4230279 Active Systems PERFORMANCE 17 PURON AC CARRIER AIR CONDITIONING 24APA736A30 CNPV*3717A**+UI 58CV(A,X)070-12 37000 13.00 16.70 1

other than that, it looks like you are working with a good dealer. I would follow up on the coil, filter cabinet, and get upgrade price on the Performance 16 HP model. I don't like the idea of a return in a closed closet.

and you will be pleasantly surprised at the temp of HP air on the newer mdls like the Performance Series.

IMO
Good Luck!

Tigerdune, thank you so much for your input. I will check with dealer on your coil recommendation hopefully today. So how would you convince my hubby to go dual fuel HP? Talk to me--LOL. Hoping to hear your thoughts. Debbie

debnmike

I took a quick look and Carrier does not have Performance 16 HP that qualifies for tax credit in a configuration with that size furnace.

I do believe that the sweet spot for Ga area/climate is 80% two stg VS furnace with a qualifying HP. I will look further when time is available.

If operating cost though is not a prime consideration, then stick with 80% furnace/AC combo.

I would want the Carrier coil and a box filter as suggested in earlier post.

IMO

Tigerdunes, thanks again. Contractor is going to look at the coils you suggested. He thinks they are horiziontal & vertical, I need upflow. I was told that furnance is 80% 2stage scroll-variable speed. I want a system that is efficient, saves me $$ in operating, and provides great cooling, warm heat, reduces humidity that effect both, and get a tax credit. Any other suggestions? No HP for us though. Thank you, Debbie