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Natural and Abundant

Genesys™ CO2 Systems

As early as the 1860s, Carbon Dioxide or CO2 (R-744) was used as one of the earliest refrigerants. Today, CO2 re-emerges as a future-proof option for both commercial and industrial refrigeration. Regulations continue to push the industry away from ozone-depleting and global-warming synthetic refrigerants to preserve our planet, meaning now is right time to return to the beginning of refrigeration with Zero Zone Genesys™ CO2 Systems.

CO2 is an environmentally exceptional refrigerant with an ozone depletion potential (ODP) rating of 0 and a global warming potential (GWP) rating of 1. This makes CO2 up to 4,000 times less impactful on global warming than HFC refrigerants (isn’t this a specific HFC). CO2 is the smartest choice environmentally. The recent advent of high-pressure, iron-impregnated copper has allowed the traditionally stainless-steel piping to transition to familiar brazed copper piping, further improving value and simplifying repairs. CO2 is a smart choice environmentally and economically.

“I wanted the best product in here for the long run, not only economically but also environmentally. One leak in the old (HFC) system would cost you $10,000, $15,000, $20,000, where if there’s a leak in this, it’s very little. CO2 seemed like a no-brainer.” – Director of Buildings for School District


  • With an ASHRAE safety classification of A1 (nontoxic, nonflammable), CO2 is a perfect match for supermarkets and grocery stores.
  • The EPA regulations will end the use of most HFC refrigerants by 2027 or earlier, which means today is the day to make CO2 the refrigerant for your next store.
  • Zero Zone provides systems that fit inside a store’s mechanical room or outdoor equipment to save valuable indoor space.
  • Choosing a Genesys™ transcritical CO2 system allows a store to utilize a single refrigerant across the entire facility, in both its mechanical space and the retail space.


  • CO2 is an effective refrigerant for industrial applications, either serving as the sole refrigerant in a CO2 transcritical system or as a secondary refrigerant in a cascade system.
  • CO2 has a high cooling capacity, meaning smaller compressors and smaller line sizes, and it has a high density, leading to increased coil efficiency.
  • Applications include
    • Cold storage warehouses
    • Food processing facilities
    • Chiller applications
    • Medical/pharmaceutical plants
    • Data centers


Zero Zone offers a wide range of features for Genesys™ CO2 Systems to suit your needs, which should be no surprise since we’ve always been green™.
  •  CO2 transcritical and subcritical refrigeration systems
  • Single stage systems and cascade systems
  • Indoor, outdoor, or factory installed inside a custom electrical mechanical center (CEMC)
  • Capacity: 5 tons to 500 tons • Operating conditions: -40°F to 40°F
  • Reciprocating or scroll compressors
  • VFD capacity control available on lead compressors
  • Air-cooled, water-cooled, or adiabatic gas coolers
  • Microprocessor CPC or PLC control system
Are you ready to move forward with CO2? Contact your local Zero Zone sales representative to get started.


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