The first prototype

A utopian idea takes shape.

A compression refrigeration unit makes history

And this seems to be Holger Sedlak’s motto. The founder of Efficient Energy with the original idea calculated, tinkered and experimented – and ultimately inspired Oliver Kniffler with his idea of an environmentally-friendly refrigeration unit. Together, they then set out to turn the dream of replacing refrigerants with water into reality.

Progress – step by step

After founding the company in 2006 it would take 8 years before the eChiller refrigeration unit could be presented to the public at the leading trade fair of the refrigeration and air-conditioning industry in October 2014. This breakthrough would not have been possible without the support of the investors and patrons.



February 2016: Start of continuous commercial availability of units
January 2016:
One year of successful field tests
December 2014: Field tests commence for computing center application
October 2014: eChiller technology presented at Chillventa
Mai 2013: Santo Venture Capital joins as investor
September 2012: Initial prototypes
April 2012: Move from Sauerlach to Feldkirchen
November 2008: MIG AG joins as investor
February 2007: First financing round with private investors
September 2006: Holger Sedlak, Oliver Kniffler and Wolfgang Jacobi found Efficient Energy GmbH


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