> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/efr-user-manual/getting-started/installing-enercalc-for-revit.md).

# Installing ENERCALC for Revit

How to install the ENERCALC for Revit add-in and approve it on first launch in Revit.

ENERCALC for Revit is powered by a Revit add-in that installs to one or more versions of Revit, as desired by the user. Upon purchasing a subscription or initiating a trial, you will receive an installation download. Prior to beginning installation, close all instances of whichever versions of Revit will be used in conjunction with ENERCALC for Revit. You may begin the installation process by double-clicking the installer `.exe` and following the prompts in the installer.

Upon completing installation, the first launch of Revit afterwards may result in the following message.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-24143bf80611950a959482340aed2e98971f41c6%2Fclip0001.png?alt=media)

Select the “Always Load” option to allow Revit to trust the ENERCALC for Revit add-in in the future and avoid subsequent notifications.

![](https://4249100372-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgHVzpA9PT0VcuNGp6j39%2Fuploads%2Fgit-blob-98ac645535e61be71b8e4f1927f371b2b5909a12%2Fclip0002.png?alt=media)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://enercalc.com/docs/efr-user-manual/getting-started/installing-enercalc-for-revit.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.