I've narrowed down my new heat pump system to two choices now. Both guys know their stuff, did thorough calculations, and have proven good quality work. Either one would do a great installation.
the only difference between these two proposals is the air handler (and 1/2 ton delta in hp size). Both are paired in the ARI tables.
awesome dude #1: Carrier Performance 25HPA536H HP paired with a Infinity FE4ANB006 air handler. 36000BTU, SEER=16.0, HSPF=9.3
awesome dude #2:Carrier Performance 25HPA542H HP paired with a Infinity FE4ANF003 air handler. 40500BTU, SEER=14.5, HSPF=8.1
#1 likes the large air handler because of the awesome efficiency ratings, and says that with the Infinity controller, the air handler won't deliver more air than necessary.
#2 likes the smaller air handler because it falls in the perfect range to deliver an ideal 100cfm per vent. Our house has 10 vents and one return. He also worries that a larger air handler will have too much condensation on the larger coils which will dump moisture into our house.
Can anyone provide any additional input on the large vs small air handler? Seeking an education...