Mcquay Duct Sizer __full__ Jun 2026

| Feature | McQuay Duct Sizer | Carrier HAP / Building Sizer | Modern Apps (Mead & Hunt, etc.) | | :--- | :--- | :--- | :--- | | | Excellent | Slow (Heavy load) | Good (Web-based) | | Accuracy | High | High | High | | UI Design | Poor (Dated) | Average | Modern | | Offline Use | Yes | Yes | Usually No | | Cost | Free | Paid/Subscription | Freemium |

It does not generate a system curve or calculate total system static pressure. It sizes a single duct segment. It does not account for complex fittings (elbows, transitions) within the calculation; you would need a separate calculator for fitting pressure drops. mcquay duct sizer

The is a widely used, lightweight software tool designed for HVAC engineers and MEP (Mechanical, Electrical, and Plumbing) professionals to accurately calculate duct dimensions for commercial and industrial buildings. Originally developed by McQuay and now supported by Daikin Applied , this digital calculator replaces traditional manual charts to help optimize system performance and energy efficiency. Key Features and Capabilities | Feature | McQuay Duct Sizer | Carrier

While it can handle metric units, the software was primarily designed with Imperial units (Inches, CFM, FPM) as the default. Switching to metric can sometimes feel clunky, and users must be careful to ensure the inputs are read correctly by the software. The is a widely used, lightweight software tool