R744

Refrigeration and A/C

R744 refers to carbon dioxide (CO2) when used as a natural refrigerant in refrigeration and air conditioning systems. This form of CO2 is known for its excellent thermodynamic properties and offers significant advantages over both traditional and alternative refrigerants.

Key features of R744 refrigerant include:

  • Non-corrosive, non-toxic, and non-flammable.
  • Environmentally friendly, with zero Ozone Depletion Potential (ODP=0) and a very low Global Warming Potential (GWP=1).
  • No production, import, or usage quotas under the F-Gas Regulation.
  • High energy efficiency, making it a cost-effective choice as technological advancements continue to reduce expenses.
  • A sustainable solution with opportunities for improved environmental impact and efficiency across various applications, from commercial and industrial refrigeration to the automotive sector.

Interested in R744 CO2 refrigeration?

Purity Cylinder Gases is fully equipped to serve all segments of industries with gases, industrial products, safety and other supplies. Select your industry to find out more.



For CO2 refrigeration, achieving a purity of 99.995% (CO2 4.5) is crucial. Lower purity can lead to issues such as corrosion from carbonic acid, ice blockages in the pipes, and increased pressure due to non-condensable gases. Purity ensures that their R744 CO2 meets this high standard and adheres to EN ISO 9001 quality management standards throughout the entire production and supply chain.

After analyzing the finished product and confirming that purity parameters have been met, the results are recorded in a batch log.

R744 vs R134a

R744

Boiling Point
-78°C

Critical Point
31°C

Saturation Pressure at 25°C
6370 kPa gauge

Saturation Pressure at 80°C
Not Applicable

Flammability Rating
A1 – Non Flammable

R134a

Boiling Point
-26°C

Critical Point
102°C

Saturation Pressure at 25°C
567 kPa gauge

Saturation Pressure at 80°C
2490 kPa gauge

Flammability Rating
A1 – Non Flammable

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