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This is the login for Trane® Connect™ and other Trane® commercial applications. Trane® Connect™ is our secure, cloud-based customer portal to access your building systems to remotely monitor and manage building systems, and conduct routine maintenance.

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VariTrane Duct Designer

VariTrane Duct Designer

VariTrane Duct Designer

VariTrane Duct Designer streamlines duct design and improves calculation precision, letting you optimize your designs while obtaining a minimum pressure system. VariTrane Duct Designer enables you to organize the layout structure of your duct system and provides detailed engineering information on a section-by-section basis making revisions and updates easier.

The software is based on engineering data and procedures outlined in the ASHRAE Fundamentals Handbook. It includes tested data from ASHRAE Fitting database and from United McGill to provide the most accurate modeling possible.


  • Improves calculation precision
  • Organizes and optimizes designs
  • Updates and revisions made simple

Software Support Lifecycle

Beginning in 2023, new extended renewal subscription options will be available for the TRACE 700 family of products and Trane Design Tools. Learn more about your software End of Service and Support options.

The VariTrane Duct Designer program consists of three applications

1. Duct Configurator

Helps you model and size supply duct systems.

2. Ductulator®

Quickly sizes system components and determines the appropriate nominal duct size for equal friction applications.

3. Fitting Loss Calculator

Quickly identifies the optimal fittings and sizes for each duct section by comparing their efficiency and cost.


Trial Download

  • Release Date: 05/27/20 Size: 215 MB

Full Version

  • Release Date: 05/27/20 Size: 215 MB

  • Release Date: 05/27/20 Size: 215 MB