Everything CO₂. Solutions. Products. Expertise.

Design smarter. Build better. Perform longer.

Enhance your projects and secure long-term reliability and energy efficiency with the industry’s most comprehensive CO₂ product range and expertise. Benefit from solutions designed to help you scope, build, and maintain CO₂ refrigeration systems proven to perform across different applications and climates.

Made to fit. Made to last. Made to perform.

The right, well-designed CO₂ refrigeration systems is a sustainable and energy-efficient application for a high cooling load. Whether you are exploring CO₂ for the first time or want to upgrade an existing installation, we are here to help. From cascade installations to transcritical CO₂ refrigeration systems, we provide large components explicitly built for the job.

Cascade systems combine subcritical CO₂ refrigeration with other refrigerants, to achieve low temperatures and high efficiency, especially in warmer climates. CO₂ refrigeration systems can be configured for low or medium temperatures, or combined in booster systems for multi-temperature cooling. Booster systems are used in transcritical CO₂ refrigeration systems to address various cooling needs by providing simultaneous multi-temperature cooling and integrating heat recovery for improved energy efficiency. An example is the latest and largest scalable ejector which increases efficiency while reducing energy consumption and costs.

Join RETHINK Live — CO₂: From value to system design

Our upcoming RETHINK Live sessions, “CO₂: From value to system design,” will provide targeted insights, whether you are looking for a clear introduction to CO₂ systems or a deep dive into advanced technical design. Select the session that aligns with your current level of expertise or attend both for a comprehensive understanding from fundamentals to design.

Secure your spot today

Large ejector solution

The new large ejector solution is the largest scalable ejector
available on the market, designed to deliver immediate
efficiency gains while simplifying system design, installation,
and maintenance. The solution delivers higher overall system
efficiency and lower energy consumption by improving cooling
system efficiency.

Learn more

Product range

Large ejector solution

For CO₂ systems with parallel compression
Lifts part of the gas from MT suction and mixes it with gas from gas cooler at medium pressure level
Designed for large capacity transcritical CO₂ systems

Line components 140B

Balances large differential pressures
Long-lasting seat design and replaceable valve seat
Designed for favorable flow conditions

ICMTS 50/80 with ICAD 600B-TS Actuator Motor Operated Valve

Simplified installation and design
Precise regulation at partial load conditions
Specifically built for heavy commercial and industrial applications

ICV 20-80 & ICV Flexline Control valves

65 bar upgrade makes subcritical CO₂ and NH3 heat pump applications easy
Operational safety and efficiency
High design flexibility

ICF Flexline™ Valve station

Transformative multi-ported design 943 psig (65 bar)
Trusted efficiency and productivity
Time-saving, plug-and-play solution

Semi-hermetic CO₂ compressors

Broad operating limits and wide frequency range
Optimized efficiency for the highest EER/COP values
Unrivaled reliability and durability

Explore the complete range of industrial CO₂ solutions

Benefit from Danfoss wide choice of expertise to develop industrial solutions specifically designed for CO₂ systems. Our comprehensive portfolio includes a wide array of products and technology components suited to the demands of robust and transcritical applications.

See the full portfolio

Meet our CO₂ expert

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Pepijn Mol, Business development manager, CO₂ in Industrial Refrigeration
Danfoss Climate Solutions

Pepijn Mol has over 16 years of experience in industrial refrigeration, with a background spanning key account management, technical field support, and application selection. He is currently a Business Development Manager for CO₂ industrial refrigeration, working closely with consultants, contractors, and OEMs to support the adoption of efficient and future‑proof CO₂ solutions.

Ready to take the next step in optimizing your industrial refrigeration solutions? Connect with us by filling out the form below.

Whether you have inquiries about our CO₂ refrigeration system, need expert advice, or want to explore partnership opportunities, we're here to assist. Your questions and comments are important to us, and we look forward to engaging with you to find the best solutions for your specific needs.

Simply complete the form, and our team will get in touch with you promptly. Let's work together to enhance the efficiency and sustainability of your industrial refrigeration systems.

Brochure

Enhance your projects with long-term reliability and energy-efficient performance

Building and maintaining flexible, reliable CO₂ transcritical systems is easier than ever. Discover the industry's most extensive CO₂ product range and know-how – and learn how you can enhance your projects.

Get the brochure

CO₂ refrigerant

CO₂ is a sustainable, natural refrigerant that, compared to F-gasses, delivers strong benefits in industrial applications. With zero ozone depletion and a GWP of only 1, CO₂ refrigeration has a low environmental impact and works in any climate at a large scale.

Energy efficiency

The choice of refrigerant and system design can directly benefit your business and your bottom line. Not only can CO₂ systems provide great energy efficiency and options for heat recovery, but they are a future-proof application and a sustainable platform for an evolving business.

Efficient cooling

Get access to expert know-how and support from people on the frontline of industrial refrigeration. From design to implementation and maintenance of complete CO₂ cooling systems, we’re here to share knowledge and support your interest and investment.

Videos

Welcome to our 'Expert Talks' video series, where we break down the essentials of industrial refrigeration. In 'Embracing CO₂ in Industrial Refrigeration,' we discuss the shift to natural refrigerants. 'Building Industrial CO₂ Transcritical Systems: Key Considerations' walks you through the critical point for constructing top-notch CO₂ systems. Curious about efficiency? Tune into 'CO₂ Transcritical vs. Other natural refrigerants' for a straightforward comparison. Join us for practical insights that matter in the world of industrial refrigeration – no-nonsense, just expertise.

Embracing CO₂ in industrial refrigeration: the transition to natural refrigerants

Building industrial CO₂ transcritical systems: key considerations

CO₂ transcritical vs ammonia: unveiling efficiency in industrial refrigeration

Why CO₂ in industrial refrigeration?

Carbon dioxide belongs to the so-called “Natural” refrigerants, together with e.g. ammonia, hydrocarbons such as propane and butane, and water. While ammonia is a great all-round refrigerant for industrial refrigeration applications, its use is sometimes limited in areas where toxicity or flammability is a concern.

CO₂ is recognized for its excellent heat transfer properties, low global warming potential, and status as a non-toxic, non-flammable, and low toxicity refrigerant improving the overall system efficiency. In places where it is allowed to use only a limited amount of ammonia, cascade or secondary CO₂ systems are a great solution. With a low global warming potential of just one—thousands of times lower than synthetic refrigerants—CO₂ has no environmental impact and ozone layer impact, making it an environmentally friendly option. It is also inexpensive, readily available as an industrial byproduct, and not subject to phase-out regulations. As a dense refrigerant with high thermal conductivity and volumetric capacity, CO₂ allows for smaller piping and compressor volumes, increasing CO₂ refrigeration systems efficiency.

CO₂ cascade systems are very efficient for low temperature applications. E.g. for freezing fish. With CO₂ it is possible to freeze the fish faster and to lower temperatures, thus improving the quality and consuming less energy than in the same freezing process using other refrigerants.

CO₂ is excellent as a brine. The circulation rate required for efficient freezing with CO₂ is very low, thus reducing the size of the pumps, as well as the energy consumption. Heat transfer efficiency of CO₂ is nearly constant for all practical temperatures, which makes it very attractive as a brine for low and medium (up to 0 ºC) temperature applications.

Technical developments since the 1920s have removed many of the barriers to the use of CO₂, which once existed. However, CO₂ users must still be highly aware of its unique properties and take the necessary precautions to avoid problems in their refrigeration systems. Danfoss specialists can help you to select suitable components, and the literature found on this website covers a great deal of Danfoss experience with CO₂ applications.