[1] In 1933 Mads Clausen (1905–1966) founded Dansk Køleautomatik- og Apparatfabrik, later in 1946 the company name was changed to Danfoss.

[1] The thermostatic radiator valve was invented by Mads Clausen in 1943, later patented, and in 1952 promoted as an energy saving device.

[12]In 2002 Danfoss joined the United Nations Global Compact, consisting of nine principles with social and environmental responsibility.

In 2010, some Danish newspapers reported that Danfoss sold its products to Nazi Germany during World War II.

[14] [15] They quoted the book Krigens købmænd ("Merchants of War") by Christian Jensen, Tomas Kristiansen and Karl Erik Nielsen, who stated that Danfoss sold goods to the occupying forces for 408,850 Danish kroner.

[16] [17] On 7 December 2011 Danfoss was fined 90 million euro for exercising a cartel with Embraco / Whirlpool Corporation, Panasonic, ACC and Tecumseh Products.