I'm in the process of replacing my HVAC system, and would sure appreciate some guidance on a couple of issues.
My existing system features a 100K in/92K out Heil furnace with 4 ton blower. A/C is 2.5 ton Heil 5000. Furnace is factory-wired for 1585 cfm cooling/1425 cfm heating (@0.5 ESP). Main trunk is only 18.5" x 7.5", which after reading this forum, seems too small??? Total trunk length is about 50 feet, with two reductions along the way - last 32 feet are 14" x 7". Total of 11 6" round branches. So my questions are:
1. How mismatched is the current blower to the ductwork and A/C unit? What are consequences of mismatch?
2. Assuming new equipment is properly matched to existing ductwork, is there any capacity left for additional branches?