Mcquay Duct Sizer For Mac [updated] (2025)

McQuay Duct Sizer is a software tool designed to help engineers, architects, and HVAC professionals size ducts for commercial and industrial buildings. The software is based on the ASHRAE Duct Fitting Database and uses the most up-to-date methods for calculating duct sizes, including the equal friction method, the constant velocity method, and the static regain method.

For years, the industry had been dominated by clunky Excel spreadsheets or Windows-only executables that looked like they were coded in 1998. Elias tried to open his usual Windows emulator to run the legacy software, but the spinning beach ball of death mocked him. The emulator crashed. The clock ticked past 8:00 PM. The client presentation was at 8:00 AM.

Need fast, reliable duct sizing without booting Windows? Discover how Mac users can access McQuay’s trusted duct-sizer workflows — and practical Mac-native alternatives that match professional needs. mcquay duct sizer for mac

Search the Mac App Store for "Duct Sizer." Several independent developers have created paid and free native apps that calculate duct sizing using ASHRAE standards.

A very specific guide!

He missed the "Equal Friction" and "Equal Velocity" methods that lived in the McQuay menus.

You install a program that runs a full version of Windows in a window on your desktop. McQuay Duct Sizer is a software tool designed

Websites like Ductulator.com or various HVAC engineering blogs offer free, browser-based friction and velocity calculators that mimic the exact math used by McQuay. 🍎 Native Mac Apps and Widgets