Mcquay Duct Sizer For Mac [portable] Jun 2026

Some HVAC forums have extracted the Duct Sizer as a standalone .exe and bundled it with Wine wrappers (e.g., “McQuay Duct Sizer for Mac.dmg”). —these are unofficial and could contain malware. Always scan with Malwarebytes for Mac.

Then run ductsize --cfm 800 --friction 0.08 to get dimensions. No GUI, but extremely fast and scriptable. mcquay duct sizer for mac