JSHR: 0.81
MJ8 Tons: 3.03
SqFt/Ton: 1667
CFM/SqFt: 0.27
Est. Blower CFM: 1381

Total 60,450 29,463 6,874

My guess AC should be = 3.5T = 042.

Furnace = 80,000BTU @1600cfm. Current furnace 110, 4T airhandler paired with 3.5 T AC.

Ductwork friction rate? .... How can I figure out if it is designed properly.

Name Heating Sensible Latent
Windows* 12,020 11,980
Skylights* 0 0
Doors 3,513 1,343
Walls 12,303 2,406
Ceilings 3,573 2,627
Floors 8,680 1,022
Infiltration 7,142 848 1,122
Internal 2,350 1,000
Duct Loads 5,526 2,280 265
Ventilation 7,692 1,697 4,487
Blower Heat 1,706
AED* 1,203
Average Load: 14,687 Btu/hr
Excursion Limit: 19,092 Btu/hr
Peak Load: 20,295 Btu/hr
AED Load: 1,203 Btu/hr