Important Update on Our API Packages

We are streamlining our API offerings. As part of this process, our current paid developer packages are being discontinued and are no longer available for purchase. Our free Basic API access remains available for all developers.  We are already developing new, flexible API packages that will be available soon.  For professional developers or businesses looking for a larger API offering tailored to your needs, we continue to provide custom solutions.  Please get in touch to discuss your specific requirements.

Basic

Free access to basic functionalities with a limited number of API calls, which allows you to directly start integrating your system and developing your application.

free free Get started Get started
General
API Products
IoT

Professional & Enterprise

Leverage our powerful APIs for your commercial application. We offer robust solutions and dedicated support for professional and enterprise-level needs. Contact our team to discuss how we can help you scale.

individual individual Contact us about Partnership Contact us about Partnership
General
API Products
IoT
Note: Viessmann reserves the right to charge a fee for the use of specific APIs and/or change the limitation of number of free API calls. The accessible IoT features vary between the different plans. The available features may also vary based on device and controller installed. For an overview of all available IoT features, please visit our API Documentation.

Do you have questions? We are happy to help!

In our FAQ section you will find the most frequently asked questions with the corresponding short answers about the Developer Portal. Also visit our API Documentation for more information about the available functionalities.

FAQ API Documentation