CO2 Rack

The CO2 Subcritical Rack is an innovative eco-friendly product by combining the high level of German Bock’s semi-hermetic compressor and THI’s long-term refrigeration experience.
It is a two-stage cascade system composed of low stage CO2 refrigerant and high stage HFC refrigerant, and can be composed of various compressor combinations.


The main characteristic

  • By applying the latest technologies such as inverters and ejectors, the compressor capacity according to the load is accurately controlled, thereby increasing the operating efficiency of the refrigeration and realizing energy savings.
  • CO2 refrigerant has higher refrigeration capacity than Freon type refrigerant.
  • The low price of CO2 refrigerant helps to reduce maintenance costs.


  • CO2refrigerant has Ozone Depletion Potential = zero (0), Global Warming Coefficient = 1, non-toxic and non-combustible, making it an ideal environment-friendly natural refrigerant.
  • CO2 Subcritical Rack excels in reducing carbon emissions and takes the lead in sustainable management.
  • The refrigerant used for refrigeration is limited to CO2, and R134a is limited to a small amount of charge and use in the system.
  • Eco-friendly, high-efficiency facilities have a positive impact on the corporate image.


  • We guarantee safe operation with more than 30 years of experience and high technology in the refrigeration market.
  • It boasts a compact design with integrated control system and easy installation.
  • It is made of high quality components and the manufacturing process includes strict quality control and testing. These tested products satisfy all possible situations and conditions. Also, it ensures a high level of availability and reliability.

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