Danfoss A/S operates as an engineering company. The firm manufactures refrigeration, air conditioning, and industrial controls for several industries. Its products include thermostatic expansion valves, solenoid, pressure and temperature regulators, electronic controls, line components, electronically operated, coils, solenoid, pressure controls and thermostats, filter driers, sight glasses, contactors and motor starters, liquid level controls, condensing units, appliance, controls accessories and spare parts, compressors for air conditioning, heating and refrigeration, heat exchangers, and valve station. The company was founded by Peter Johan Mads Clausen on September 1, 1933 and is headquartered in Nordborg, Denmark.