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  • Facts and History
  • 80 years of innovation

    The pioneering product

    The expansion valve was the very first Danfoss product, which Danfoss founder Mads Clausen developed in the early 1930s. The product was launched onto the market in 1933 and, today, the fifth generation of the valve is sold around the globe – helping to keep food fresh and buildings cool in various refrigeration and air-conditioning systems. We are now one of the world’s leading producers of expansion valves.

    Keeping families comfortable

    In the 1940s, we were one of the first companies in the world to design a radiator thermostat, helping house owners control the temperature in their living room – and avoid energy waste. The first mass-produced thermostats were launched onto the market in 1952.

    Keeping food fresh

    Thanks to hermetic compressors in a new compact design, Danfoss founder Mads Clausen anticipated that all families would have their own refrigerator. The first compressors were sold under a license in 1952, but demand was strong, so we began to develop and sell our own compressors from 1956.

    Mass-scale energy savings

    In 1968, we were the first company in the world to mass-produce frequency converters. The product helped control the speed of electrical motors by regulating the frequency. Today, we produce around a million VLT® frequency converters annually, which typically saves between 15 and 40% energy.

    Building the world

    At the beginning of the 1960s, we entered the hydraulics business producing the so-called Orbit® motor under a license for use in agricultural and construction machines. Our hydraulic products have since helped support the living conditions of the world’s constantly growing population and, today, hydraulics makes up approx. a third of Danfoss’ activities.

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