2Duct for Windows
Download 2Duct.
Install the latest version, then activate it inside AutoCAD using the license key sent to your email. The installer is free to download; a valid license is required to use 2Duct.
2Duct for AutoCAD
Windows installer · AutoCAD 2022–2027
Download & install
Save the installer, close AutoCAD, and run the setup on your Windows computer.
Open AutoCAD
Load 2Duct and open its license window. Use the email address that received your license key.
Activate
Enter your key to activate the software. Keep your license email for future installations.
Release notes
Version 0.9.6
This release includes automatic airflow calculations, connected terminals, adjustable flange sections, and improved labels and duct editing. One Windows installer includes the packages for AutoCAD 2022-2024, 2025, 2026.1.2+, and 2027. In-app updates verify the installer integrity before installation.
Need help installing or activating? Email info@2duct.com.
Need to update billing details or cancel a renewal? Manage your subscription with Paddle using your purchase email.
The current Windows installer is not code-signed, so Windows SmartScreen may display a publisher warning. Download it only from this official 2Duct website.