Download Summary
Ventsim 3.9.2g Version is a fully working demonstration version that has all the features of the retail Ventsim program, minus the ability to save new networks. Existing users can download either the file, and use their registration code access to provide full functionality.
Free Educational Version 2.45 is an older version of Ventsim, limited to 75 branches, but otherwise fully functional. The use of this version is strictly limited to non-commercial educational and training use. It will also run on older systems (Windows 3.1 and OS2)
Download Instructions
To install the programs, execute the downloaded file and following the directions.
Upgrading Your Registered Software
To upgrade your existing Ventsim program, run the upgrade file and direct the installation program to install into your Ventsim directory. You may need your supplied Ventsim registration code and information to install Ventsim correctly.