The Viessmann Group is one of the leading international manufacturers of heating systems.
Founded in 1917, the family business is overseen by a Supervisory Board under chairmanship of Managing Partner Dr. Martin Viessmann. The Group has roughly EUR 1.7 billion in annual turnover and maintains a staff of approximately 9,400 employees.
With 22 production and project management divisions in 10 countries, business activities in 74 countries, 32 subsidiaries and 120 sales offices around the world, Viessmann is an internationally orientated company. 56 Percent of sales are derived from export activities.
 
Comprehensive product range for all fuel types and areas of application.
Whether for detached or semi-detached homes, large residential complexes, commercial and industrial buildings or local heating networks, Viessmann has the right system solution with products for all fuel types and outputs ranging from 1.5 to 20,000 kW.
Viessmann's comprehensive product portfolio includes wall mounted condensing units from 1.9 to 105 kW, freestanding condensing boilers from 3.8 to 6,600 kW and combined heat and power (CHP) stations for oil or bio natural gas, with outputs from 1.0 to 401 kWel and 6.0 to 549 kWth. Also part of this impressive portfolio are systems for renewables including solar thermal systems with flat-plate and vacuum tube collectors for domestic hot water generation, central heating backup and building cooling, special boilers and combustion units from 4 to 13,000 kW for wood logs, chips and pellets, heat pumps from 1.5 to 2,000 kW for use with geothermal heat, groundwater or ambient air, and photovoltaic systems. Additionally, Viessmann offers a complete range of products and services related to biogas technology, from project development and engineering to raw materials management and operational oversight. The portfolio also features control engineering and data communication equipment as well as the entire system periphery, from fuel storage to radiators and underfloor heating.