Purchasing department
We are system manufacturer of high quality, technologically advanced heating system components. We would like to develop a long-term and mutually beneficial cooperative relationship with our suppliers.
To become a supplier at Viessmann
We would like to get to know you better. Please send your company profile and contact details to s2c_support@viessmann-climatesolutions.com. The responsible buyer will review the information and contact you if your company is considered for a sourcing request.
Are you already a supplier with us?
Please continue to use the Supplier Portal as usual to access Viessmann supplier services and applications: Viessmann Supplier Portal
Banned and restricted substances
Our strategic goals in regard to the environment, health and safety include the reduction of pollutants and emission to the environment. To this end we constantly review, improve an update our processes and our products.
The hazardous material and substance law outlines banned substances, restrictions, limits and declaration requirements. All suppliers need to be in full compliance with these regulations without any exceptions. All goods and services shall be provided in the light of these prohibitions.
You can find a current list of banned substances in the pdf below (this information is supplied without liability).
Terms and Conditions of Purchase
Orders are placed in accordance with our terms and conditions of purchase you can download below.

