mcquay duct sizer Download

The McQuay Duct Sizer is a specialized software tool designed for HVAC professionals to assist in the accurate and efficient sizing of air ducts. This tool is essential for ensuring optimal performance and energy efficiency in HVAC systems. Here are some key features and functionalities of the McQuay Duct Sizer:
McQuay Duct Sizer

Key Features

  1. Duct Sizing Methods:
    • The software supports two primary methods for duct sizing: the Equal Friction Method and the Equal Velocity Method. The Equal Friction Method uses flow rate and duct friction loss as inputs, while the Equal Velocity Method uses flow rate and air velocity as inputs.
  2. Types of Ducts:
    • The McQuay Duct Sizer can calculate sizes for both rectangular and round ducts. For rectangular ducts, it calculates the width and height, and for round ducts, it calculates the diameter.
  3. User-Friendly Interface:
    • The software is known for its intuitive and user-friendly interface, making it accessible for both experienced engineers and those new to HVAC design.
  4. Precise Calculations:
    • The tool provides precise calculations for duct sizes, ensuring that the designed HVAC systems operate efficiently and effectively.
  5. Export Capabilities:
    • Users can export the results to Excel, which is useful for further analysis and documentation.

Usage and Tutorials

  • Step-by-Step Tutorials:
    • There are several resources available, including YouTube tutorials, that provide step-by-step instructions on how to use the McQuay Duct Sizer. These tutorials cover the basics of duct sizing, including how to input data and interpret the results.
  • Practical Examples:
    • Tutorials often include practical examples, such as sizing ducts for specific HVAC systems, which help users understand the application of the software in real-world scenarios.


  • The McQuay Duct Sizer is available for free download. It is also part of the suite of tools provided by Daikin Applied, which includes other useful HVAC design software.
Download McQuay Duct Sizer

Community and Support

  • Community Feedback:
    • The software has received positive feedback from the HVAC community for its accuracy and ease of use. Users have shared their experiences and tips on forums and comment sections, which can be helpful for new users.
  • Support Resources:
    • In addition to community support, there are official resources and manuals available that provide detailed information on how to use the software effectively.
  • HVAC-ENG AI help

Other McQuay Softwares:

In summary, the McQuay Duct Sizer is a valuable tool for HVAC professionals, offering precise and efficient duct sizing solutions. Its user-friendly interface, support for multiple sizing methods, and availability of tutorials and community feedback make it a top choice for designing and optimizing HVAC systems.