> For the complete documentation index, see [llms.txt](https://docs.bimcat.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bimcat.org/user-manual/installation.md).

# Installation

### **Download the Plugin**

Building Information Model Climate Action Tool (bimCAT) is delivered as an **msi** installer for Windows.

It comes in two versions:

* [BIM Climate Action Tool (bimCAT)](/user-manual/installation/tally-climate-action-tool-tallycat.md)
* [BIM Climate Action Tool (bimCAT) Community Edition](/user-manual/installation/tally-climate-action-tool-tallycat-community-edition.md)

Only one of them could be installed on your PC at a time. In terms of functionality, the only difference between them is the **About** window and the source of update. Also, **BIM Climate Action Tool (bimCAT)** always installs on the per-machine basis while **BIM Climate Action Tool (bimCAT) Community Edition** allows you to choose the installation scope.

If you right-click the MSI installer of either plugin version and view its properties, you may find the version number in the **Details > Subject** field.

<figure><img src="/files/xz6JlWuNZxFOJJgp59HY" alt=""><figcaption></figcaption></figure>

**Close Revit before installing**

Please make sure that the Autodesk Revit application is not running while you are installing the plugin!

**Install the plugin**

Open the .msi file to start installation.

![](/files/pxwAqyLYiN0SDWlzOcsx) ![](/files/bnL1WbuXUHn1lxdOuqME)

The installation currently offers Revit 2025, Revit 2024, Revit 2023, Revit 2022, Revit 2021 versions of the plugin; choose the version of Revit you are using.

<div align="left"><figure><img src="/files/vtNryHsDpjGiAujZx6sv" alt=""><figcaption></figcaption></figure></div>

The installer is **signed**, and the plugin is compatible with **Autodesk Store Bundle** format, so Windows shouldn’t display any warnings during the installation process or when Revit starts.

**Uninstalling the Plugin:** BIM Climate Action Tool (bimCAT) will appear in the Windows Apps & features (Installed apps) screen, where you can uninstall it like any other application.

<figure><img src="/files/ErdlrMz0bup3A86SBipd" alt=""><figcaption></figcaption></figure>

For documentation on exactly what the installer does see [Appendix 1: Installer](/user-manual/appendix-1-installer.md).