1320571A | Genuine Danfoss® ACC Climate Control Unit

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 US.
In 1941, activities 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.