👇 Have you tried v6.3 or earlier? What’s your go-to duct sizing method? Let’s discuss below.

💡 Use it alongside your CAD or Revit workflow to double-check duct sizes before coordination.

A hidden gem in version 6.4 is the rudimentary NC estimator. It warns the user if the calculated velocity will likely generate audible noise in a given occupancy type (office, hospital, theater).

Design Tools Duct Sizer Version 6.4 is a widely used software program designed to simplify the duct sizing process for HVAC professionals. Developed by Design Tools, Inc., this software has been a staple in the industry for many years, providing accurate and reliable calculations for duct sizing, airflow, and pressure drop.

Remember: Good duct design saves energy, improves comfort, and reduces noise. Whether you pay for a modern app or use an archived copy of version 6.4, the principles remain the same. Size it right, the first time.

Design Tools Duct Sizer Version 6.4 is a powerful software program that simplifies duct sizing for HVAC professionals. With its comprehensive features, user-friendly interface, and industry-standard compliance, this software is an essential tool for ensuring optimal system performance, energy efficiency, and cost savings. While free download options are available, exercise caution and consider purchasing the software from the official website or authorized resellers to ensure a safe and legitimate copy.

: A more comprehensive Windows-based program for complex system layouts. Carrier HAP

The software uses the Darcy-Weisbach equation and Moody chart approximations. You input the air volume (CFM/m³/s) and desired friction rate (typically 0.05 to 0.15 in. wg/100 ft). The software outputs:

You can print individual calculation sheets or export results to a CSV file for integration into Excel-based proposals.

The latest version of Design Tools Duct Sizer, Version 6.4, offers a range of features that make it an indispensable tool for HVAC designers, engineers, and contractors. Some of the key features include:

This is the most critical section of this article. The keyword is searched thousands of times per month. However, the original software was commercial.