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Download McQuay Duct Sizer for Free – A Handy Tool for HVAC Designers.

 

🌀 Download McQuay Duct Sizer for Free – A Handy Tool for HVAC Designers

If you're an HVAC engineer, technician, or student working on duct design, you've probably heard of the McQuay Duct Sizer—a classic utility that simplifies duct sizing calculations with just a few clicks. In this post, I’ll walk you through what it is, how it works, and how to download it for free (legally and safely).

🧰 What Is McQuay Duct Sizer?

The McQuay Duct Sizer is a lightweight Windows-based tool developed by McQuay International (now part of Daikin). It helps HVAC professionals quickly size air ducts based on airflow, velocity, and friction loss.

🔑 Key Features:

🎯 Who Uses It?

  • HVAC design engineers
  • Drafting professionals
  • Students learning duct design
  • Contractors verifying duct sizes on-site

✅ Advantages of Using McQuay Duct Sizer

  • Fast and lightweight – no installation required
  • Accurate – based on ASHRAE fundamentals
  • Portable – runs on most Windows systems
  • Free – originally distributed as a free utility by McQuay

📥 How to Download McQuay Duct Sizer for Free

⚠️ Disclaimer: McQuay Duct Sizer was originally released as a free utility. However, it is no longer officially supported or distributed by Daikin. This post shares links for educational and archival purposes only. We do not host or distribute the software ourselves, and we do not endorse unauthorized use.

To download: Click Here

🧠 Bonus Tip: Use It Alongside HAP or Revit

While McQuay Duct Sizer is great for quick checks, you can pair it with tools like Carrier HAP, Revit MEP, or Trace 700 for full HVAC system design and documentation.



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