Efficient Energy – Refrigeration technology Made in Germany

We are among the most innovative refrigeration technology suppliers in Germany

With courage, passion and ingenuity, we have succeeded in replacing conventional refrigerants with pure water (R718). By virtue of its mode of operation, eChiller sets new standards in energy efficiency, with up to 80 % energy savings compared to the state of the art.

Success that motivates us and confirms that the seemingly impossible is indeed possible.

We have great expectations and do everything in our power to achieve them. Thanks to our world-class staff with excellent qualifications and know-how, Efficient Energy has today become a strong, competitive enterprise with a product in a league of its own: eChiller.

Our mission

We are establishing the refrigerant water as an industry standard and improving our customers’ cost effectiveness while at the same time improving their climate balance with our products, which are setting new economic and ecological standards.

Our vision

We are forcing a paradigm shift in the refrigeration industry by using water as a refrigerant. In the process we are revolutionizing both domestic and international refrigeration and air-conditioning industries with environmentally friendly and economical refrigeration solutions.

We invite you to join us in making a difference. Help us fulfill our responsibility for the future and to the next generations by sustainably improving the refrigeration industry.


Think big, act bigger!
Live the future today.
Build on innovation.
Take farsighted decisions.
Invest in the future of your business and the climate.

Be part of tomorrow

Investors and patrons

We sincerely thank our investors and patrons for their unwavering support and belief in our vision.

Our investors:

MIG Fonds
Santo Venture Capital GmbH
Private Investoren
Geschäftsführende Gesellschafter

Our patrons:

Deutsche Bundesstiftung Umwelt (DBU)
Bayerisches Staatsministerium für Wirtschaft, Infrastruktur, Verkehr und Technologien (StMWIVT)

Are you interested in working for Efficient Energy?