Shape Tomorrow with Today´s Cooling

The eChiller models are the only chillers worldwide which use the natural safety refrigerant water (R718) as refrigerant, offer outstanding energy efficiency, and are manufactured in mass production ‘made in Germany’. The eChillers are the most natural, and at the same time, future-proof investment in providing best cooling capacities with a modular scalability . The echillers are ideally suited for cooling data centres and server rooms, buildings, switching cabinets and industrial processes.

Green technology

Our cooling technology is based on water: Zero percent emission.

Water as a refrigerant

Innovation thinking

Our innovative products are groundbreaking and unrivaled.

Refrigeration system eChiller

Internationally leading

We are an international pioneer for climate-friendly cooling.


Made in Germany

We develop and produce our products entirely in Germany.

More about us

Industries and Applications:

What makes the
eChiller so clean,
environmentally friendly
and future-proof?

kg CO2

The total carbon savings through the use of the eChiller.

Improve your carbon footprint too!

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

Learn more

The eChiller - a multiple awarded product

Find out more about our environmentally friendly chiller

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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


European Technology Awards 2022

01. Dezember 2022, Paris


Kampmann Kampus Seminar

04. July 2023, Wiesbaden

Kampmann Kampus Seminar

19. October 2023, Gelsenkirchen


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