In 1933 Mads Clausen (1905-1966) founded Dansk Køleautomatik- og Apparatfabrik, later in 1946 the company name was changed to Danfoss. The first product was an expansion valve for refrigeration units, it was developed after studying imported valves from the USA. In 1941 the activities are expanded to products for heating. The thermostatic radiator valve was invented by Mads Clausen in 1943, later patented, and in 1952 promoted as an energy-saving device. In 1962 the company started production of power electronics, the first product was custom built rectifiers, later in 1968 production of the VLT Frequency converter began, the first of its kind in the world. The company also expands its activities into hydraulics, the first hydraulic component is produced on the factory in Nordborg in 1964.

The Danfoss Group manufactures products and provides services used in:

  • Cooling food
  • Air conditioning
  • Heating buildings
  • Variable-frequency drives
  • Gas compressors
  • Powering mobile machinery.

Danfoss employs approximately 28,000 people worldwide with its headquarters in Nordborg, Denmark. In 2002 Danfoss joined the United Nations Global Compact, consisting of nine principles with social and environmental responsibility.

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