I'd like to get others opinion. I run into alot of homes where it seems that the A/C is slightly to big for the ductwork that is installed. Lots of times the the a/c is working and pressures are too low.And... the superheat never lines up good. Can't get enough superheat. Air temp at coil and in return are too low, but does not cool house. Stays around 78-80 and runs all day. I do see this alot.
General question.... What is the min of square inches of duct(square) would be acceptable for the volume of 2 ton a/c with 2 ton drive blower??? 2-14x8 supply or 1- 28x8????? I'm only concerned with supply duct size for this question. System as example has 8-six inch round pipe to a 1000 sq. ft home
Min square duct needed for 3 ton a/c with 3 ton drive blower???? 2-16x8 supply, or 32x8 min??? having 12 six inch round pipe runs to 1300 sq ft home
Just looking for opinions ....