For users who want to avoid installations, several web-based "Ductulators" provide the same McQuay-style calculations (CFM, velocity, and pressure drop) through any browser, including Safari or Chrome on Mac. file on your Mac? Ductulator - Duct Sizing - App Store
Allows you to run the Windows .exe file alongside your Mac apps. mcquay duct sizer for mac
Mirrors the "Equal Friction" and "Equal Velocity" methods used by McQuay. For users who want to avoid installations, several
Supports sizing by friction loss, velocity, or constant friction methods. Mirrors the "Equal Friction" and "Equal Velocity" methods
If you require the exact McQuay interface for a specific project, you can run the original Windows Dizer.exe using Parallels Desktop or CrossOver . This allows the lightweight tool to run alongside your other Mac applications without needing a full PC. 2. Core Features of the McQuay Sizing Tool
Carmel Software Corporation (widely considered the mobile industry standard for HVAC tools).
A free, open-source alternative to CrossOver, though it may require more technical setup. Recommended Alternatives for macOS