Duct System Design
For each new HVAC system in CoolCalc Manual J, you can specify whether the system is ducted or ductless. If you select "ducted", you can edit the duct system details on the "duct system design" screen.
CoolCalc Manual J creates default duct system(s) based on the home's construction details and duct system location input. You can always fine-tune duct system details in the duct system user dialog.
Tip: Select “continue editing” in the “Save” button options to fine tune duct system details after saving the duct system design