Modelica Buildings library
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Modelica Buildings library

Build Status

This is the development site for the Modelica Buildings library and its user guide.

Stable releases including all previous releases are available from the main project site at

Instructions for developers are available on the wiki.

Library description

The Modelica Buildings library is a free open-source library with dynamic simulation models for building energy and control systems. The library contains models for

  • air-based HVAC systems,
  • water-based heating systems,
  • controls,
  • heat transfer among rooms and the outside,
  • multizone airflow, including natural ventilation and contaminant transport, and
  • electrical systems.

The main project site is

Current release

Download Buildings Library 5.1.0 (2018-06-14)


The Modelica Buildings Library is available under a 3-clause BSD-license. See Modelica Buildings Library license.

Python modules are available under a 3-clause BSD-license. See BuildingsPy license.

Development and contribution

You may report any issues with using the Issues button.

Contributions in the form of Pull Requests are always welcome. Prior to issuing a pull request, make sure your code follows the style guide and coding conventions.