eChiller – the carbon neutral cooling machine with the safe and natural refrigerant water

eChiller is the only chiller available in standard that uses pure water (R718) as a refrigerant.

The principle is not new: Our technology builds on the direct evaporation, compression, condensation and expansion of water or water vapor in a closed-loop cycle. Depending on the application, this process takes place in a vacuum at low pressures between 10 to 100 mbar and in the temperature range of 5 to 45 °C.

The production of the eChiller has been climate-neutral since 2022.

  • Carbon-neutral

    The most sustainable chiller in the world

  • Environmentally friendly

    The most natural refrigerant in the world - 100 percent water (R718)

  • Energy-efficient

    High energy efficiency - low operating costs

  • Emission-free

    No CO2 emissions due to refrigerant leaks

  • Legal compliance

    No environmental and safety regulations

  • Low noise

    Extremely quiet and low-vibration operation

Multi-variant: the carbon neutral eChiller product family

Get to know the eChiller product family with all current product variants and optional additional products from Efficient Energy.

Advisory competence

Learn more about the eChiller

Sustainable and efficient industrial cooling that works: Bluezero Technology from Efficient Energy

Bluezero technology stands for a unique sustainable innovation in refrigeration industry because it makes water usable as a refrigerant.  The centre-piece is the Efficient Energy´s knowledge using the energy of water during the phase change in a vacuum between 10°C and 120°C. The eChiller works with the direct evaporation of water in a vacuum-tight system and closed circuit, which is hydraulically decoupled from the re-cooler and the cooling point via plate heat exchangers.

Bluezero has been successfully used in the eChiller and is also used as integrated OEM solution.


Our sales and consulting team looks forward to your inquiry

Are you interested in the eChiller, the efficient and environmentally friendly chiller from Efficient Energy?

Consulting & sales