Tools like CrossOver (based on Wine) can run Windows applications directly on macOS without needing a full Windows license or virtual machine. This is a lighter-weight alternative, though compatibility can vary.
This is the most reliable method for professionals who need to run multiple Windows applications on their Mac. A virtual machine (VM) lets you run a full Windows operating system as an app within macOS.
It serves as a high-speed digital alternative to the classic Trane Ductulator.
It prevents undersizing, which causes noise and poor airflow, or oversizing, which increases material costs. Time Saving: It eliminates manual calculation using charts.
CrossOver is a polished, commercial version of Wine designed to make running Windows apps on Mac as simple as a single click. mcquay duct sizer for mac
Supports sizing by friction loss, velocity, or constant friction methods.
If you are an HVAC engineer, contractor, or design-build professional who uses a Mac, you’ve likely encountered a frustrating roadblock: (now part of Daikin Applied) does not have a native macOS version.
This article explores the history of the McQuay Duct Sizer, why it never came to Mac, how you can run it today, and what native macOS alternatives exist.
Despite the added step of using emulation software, many HVAC professionals find the effort worthwhile: Tools like CrossOver (based on Wine) can run
Poorly sized ducts can cause major problems. Undersized ducts increase static pressure and noise, while oversized ducts waste material and reduce velocity, leading to poor ventilation.
: (Intel Macs only) You can restart your Mac into a native Windows partition to run the software. Web-Based Alternatives
The primary hurdle for Mac users is that McQuay Duct Sizer is a Windows program. While the software is free and widely available from resources like HVAC-ENG.com, these files are in .exe format, which macOS cannot run directly.
Modern Macs equipped with Apple Silicon (M1 or newer chips) can install mobile iOS apps directly onto the desktop from the Mac App Store. HVAC Duct Sizer - App Store - Apple A virtual machine (VM) lets you run a
: Instantly calculates equivalent circular duct diameters, rectangular dimensions, aspect ratios, velocity pressure, and Reynolds numbers.
It is a user-friendly program that incorporates a library of duct materials, fitting types, and equipment selection options, making it a comprehensive tool for HVAC system design. The software generates a detailed duct layout, including sizing, pressure losses, and fan power requirements.
Before spending hours troubleshooting, download the portable version of McQuay Duct Sizer (some sites offer the .exe without an installer). Place it in a folder on your Mac, then right-click > Open With > CrossOver/Wine. If it runs, you are set. If not, spin up a lightweight Windows 11 VM using UTM—it takes 15 minutes and works forever.
you are a student, occasional user, or manage a primarily cloud-based workflow. Modern web-based calculators or the built-in tools in Revit for Mac are sufficient.