Efficient Energy GmbH engages in the development, manufacturing, and distribution refrigeration systems for industrial and home applications in Germany and internationally. The company offers eChiller, a clean compression refrigeration unit that uses pure water (R718) as a refrigerant used for removing heat from server rooms and computing centers, as well as continuous industrial processes. It also provides consulting, planning, commissioning, installation, warranty, maintenance, energy efficiency optimization, and remote monitoring services. The company was founded in 2006 and is based in Feldkirchen, Germany.