Efficient Energy GmbH

Efficient Energy GmbH was a German manufacturer and system supplier specializing in environmentally friendly refrigeration technology.

Founded in 2006 and based in Feldkirchen near Munich, the company focused on sustainable cooling and heating solutions, particularly for industrial applications. Its core technology, Bluezero®, utilized pure water as a refrigerant, eliminating fluorinated gases and direct CO2 emissions. The company offered a range of products, including the eChiller family, which provided significant cooling capacity while achieving substantial electricity savings compared to traditional HFC-based chillers. Efficient Energy GmbH served various sectors, including data centers, industrial processes, and commercial buildings, and was known for its climate-neutral chillers. The company had a notable presence in the DACH region and installed over 170 systems worldwide, contributing to advancements in clean cooling and heating technologies.