While the original McQuay Duct Sizer software—now maintained by Daikin Applied
If you want a full Windows environment but do not want to pay for Parallels, VMware Fusion (now free for personal use) or UTM are excellent alternatives.
Because there is no native Mac app, you must use compatibility layers or virtualization. Here are the most reliable methods:
A massive, free online resource featuring digital equal-friction duct calculators that work flawlessly in Safari or Google Chrome. mcquay duct sizer for mac
Engineered by McQuay (and sustained by Daikin), the underlying math is trusted by local building inspectors and engineering firms worldwide. How to Run McQuay Duct Sizer on a Mac
Use software like Parallels Desktop, VMware Fusion, or VirtualBox to run the original Windows-based McQuay software.
: Employs the highly reliable constant friction (equal friction) method, velocity method, or static pressure recovery method. Engineered by McQuay (and sustained by Daikin), the
You can now move this wrapper to your Applications folder and launch it like any standard Mac app. Native Mac Alternatives to McQuay Duct Sizer
The app allows you to email HTML or .CSV reports of your calculations directly to teams or clients. Cons:
Several highly-rated apps available on the Mac App Store replicate the McQuay experience: HVAC Duct Sizer: You can now move this wrapper to your
The engineering world is rapidly shifting away from desktop-restricted software toward cloud-based applications. If you do not want to install any software on your Mac, browser-based duct sizers offer universal compatibility across macOS, Windows, and Linux.
—is a long-standing industry favorite, it was built specifically for Windows. Mac users looking for this tool must navigate a few modern workarounds or native alternatives to get the same level of precision in their HVAC designs. Understanding the McQuay Tool
Developed by Carmel Software, this app uses the exact same ASHRAE equations as the McQuay desktop software. 3. McQuay Sheet Metal Slide Rules (Physical/Manual)
Using the Duct Sizer is straightforward: