Step 1. The app will install the content to CPak Common. "C:\AutoCAD Plant 3D 2024 Content\CPak Duct HVAC Python Content Pack". The app will automatically detect the latest version of your AutoCAD Plant 3D installed in "C:\". 

Step 2. Run AutoCAD Plant 3D and run the command "PLANTREGISTERCUSTOMSCRIPTS" to compile the scripts and restart the program.

Step 3. Create a new spec and add all components from the catalog to the spec.

For more information, please check the help document in the installation folder.

Catalog support folder exists in this location:

Windows 10/11: C:\AutoCAD Plant 3D 2024 Content\CPak Duct HVAC Python Content Pack".

To uninstall this content pack, please go to Control Panel => Programs and Features => select the "Duct HVAC Python Content Pack" => Uninstall