Packages based on your needs

Use of the Viessmann Developer Portal is free but if you find you require more features or API calls, choose one of our other plans. Click the "+" or use the "Show all plan details" button below to see the list of functionalities for each plan. If you are a professional developer or a business looking for a larger API offering tailored to your needs, please use the contact form at the bottom of this page.

Monthly subscription

Annual subscription (save up to 40%)

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 Get started free Get started
General
  • 1450 API calls per day
  • 1 active API client
  • Private API use
API Products
  • User Management
  • IoT
  • Service Documents
  • Equipment
IoT - Available Features
  • Heating
  • Domestic hot water
  • Ventilation
  • Solar thermal
  • Heating+
  • Heat pump
  • Fuel cell
  • Photovoltaic
  • Battery
  • Smart climate (Single Room Control)

Electric

This consists of functions tailored to specific use cases around Battery storage and Photovoltaics. Payment only by credit card. Package only available in Germany.

7,98€ per month Get Electric plan 4,99€ per month Get Electric plan
General
  • 3000 API calls per day
  • 1 active API client
  • Private API use
API Products
  • User Management
  • IoT
  • Service Documents
  • Equipment
IoT - Available Features
  • Heating
  • Domestic hot water
  • Ventilation
  • Solar thermal
  • Heating+
  • Heat pump
  • Fuel cell
  • Photovoltaic
  • Battery
  • Smart climate (Single Room Control)

Advanced

Are you looking for more functionalities and API calls? This plan matches your needs for all devices. Payment only by credit card. Package only available in Germany.

19,99€ per month Get Advanced plan 11,98€ per month Get Advanced plan
General
  • 3000 API calls per day
  • 1 active API client
  • Private API use
API Products
  • User Management
  • IoT
  • Service Documents
  • Equipment
IoT - Available Features
  • Heating
  • Domestic hot water
  • Ventilation
  • Solar thermal
  • Heating+
  • Heat pump
  • Fuel cell
  • Photovoltaic
  • Battery
  • Smart climate (Single Room Control)
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.

Partnering

Pro / Enterprise

Are you a professional user or an enterprise and looking a commercial use of our APIs? Let us know, we are happy to get in contact with you!

Contact us

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