eChiller – Future Proof Refrigeration
Water (R718): The Safe & Natural Refrigerant

The eChiller models are the only chillers worldwide which use the natural safety refrigerant water (R718) as the refrigerant, offer outstanding energy efficiency, and are manufactured in mass production. The eChillers already comply with the F-Gas Directive and any refrigerant-related safety requirements. The eChillers’ cooling capacities range from 20 to 45 kW depending on model, and the individual units can be scaled modularly to up to 300 kW. The refrigeration machines are ideally suited to cooling data centres and server rooms, buildings, switching cabinets and industrial processes.

Industries and Applications:

kg CO2

Efficient Energy is Sustainable Refrigeration Technology

Learn more about our company, implemented projects in various application areas, activity fields and career opportunities at Efficient Energy and achieved eChiller awards.

Efficient Energy - The company for sustainable refrigeration

Read more about our history, who we are today and what values we stand for

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Awards - The eChiller is a multiple awarded product

Find out more about the awards that the eChiller has been granted

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Jobs - Make a career with one of the most sustainable employers in the refrigeration industry

Revolutionize the refrigeration industry with us and explore the job opportunities at Efficient Energy GmbH

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Job reports - Successfully implemented projects

Click through a selection of job reports and read more about our clients, the project implementation and the outstanding results achieved with the eChiller

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Events & trade fairs



11.- 13. October 2022 in Nürnberg


Data Centre World Paris

16. - 17. November 2022, Paris


European Technology Awards 2022

01. Dezember 2022, Paris


Kampmann Kampus Seminar

04. July 2023, Wiesbaden


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