Danfoss, founded in 1933 by Danish engineer Mads Clausen, is a multinational industrial company headquartered in Nordborg, Denmark. Originating from Clausen's creation of an expansion valve for refrigeration, the company quickly expanded into heating, hydraulics, and power electronics. Today, Danfoss employs over 41,000 people globally and operates across Europe, North America, Asia Pacific, and more.

The company specializes in solutions for refrigeration, air conditioning, motor controls, and renewable energy systems, including solar power and heat pumps. It serves industries such as automotive, marine, and building technologies. Key innovations include the thermostatic radiator valve (1943) and the world’s first frequency converter for motor controls (1968). Danfoss has also played a significant role in decarbonization and energy efficiency, demonstrated by its climate-friendly industrial projects worldwide.

Examples of its ongoing projects include the integration of advanced district heating systems in China, drastically reducing coal consumption in the city of Benxi, and supplying electric and hybrid solutions for heavy-duty vehicles through its Editron division. Through its Fossil Free Future program, Danfoss is developing power electronics to support zero-emission shipping and electrification of machinery.

Locally, Nordborg houses the Danfoss Museum and Application Development Center, preserving the company’s heritage and fostering engineering innovation. With deep roots in Als Island, Danfoss remains family-owned, balancing a legacy of groundbreaking technologies with a firm commitment to sustainable industrial solutions.