Enex Srl / Company


Since Enex was founded in 2004, it has been designing and developing exclusively high-efficiency refrigeration systems, using natural refrigerating fluids, in particular the carbon dioxide (CO2). Enex has been the first company ever with this mission and it succeeded in revolutionizing the entire refrigeration sector. For this reason, nowadays the company is considered a technological excellence and can boast a leadership role in the commercial and industrial refrigeration markets.

To date, Enex has deployed more than a thousand transcritical refrigeration systems, powered only by CO2. Those plants have been installed in all weather conditions and are used in most refrigeration and air-conditioning applications.

Enex offers a wide array of products:

  • Refrigeration units for commercial applications
  • Brine/water chillers;
  • Heat pumps (for sanitary water)
  • Industrial refrigeration systems (for distribution centres or groups of refrigerated cells)
  • Refrigeration systems for freezing tunnels
Foundation year
Transcritical systems installed
Countries in the world where Enex is present

CO2 systems

The use of CO2 as a refrigerant is the most appropriate solution to minimise refrigeration and HVAC sector environmental impact. This application of the carbon dioxide in refrigeration is not news. In fact, it has been used for cooling and air-conditioning starting the 1850s and in particular between 1920 and 1930. However, in the 1930s its use became less and less popular, due to the synthetic refrigerants placed on the market, the so-called chlorofluorocarbons (CFC) and hydrofluorocarbons (HCFC). Despite being easier to manage, some of the mentioned refrigerants were powerful greenhouse gases and led to serious environmental impacts, such as the depletion of the ozone layer. For this reasons, starting the 1990s, the refrigeration sector put effort into reintroducing the use of natural refrigerants, in particular the carbon dioxide, which turned out to be the cornerstone of this development. Thanks to its peculiar and somehow unique characteristics, the CO2 is considered a special refrigerant fluid and requires particular plant design solutions for a safe and efficient use.

The main advantages of using CO2:

Low cost

High availability worldwide

Zero environmental impact

Not toxic

Not flammable

Will never undergo legislative restrictions

Does not contaminate food (unlike ammonia)