Discover the opportunities of CO₂ refrigeration
Danfoss leads the development of solutions and components for CO₂ refrigeration and offers a wide range of products specifically designed for CO₂ transcritical systems.
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We have collected all our products and solutions for CO2 and equipped each with a unique code number for easy reference, so you can explore our CO2 solutions effortlessly.
Today, CO2 has proved itself as a highly reliable and cost effective refrigerant in all climates. Take a look at the CO2 infographic to learn more about all the benefits.
Mobile CO₂ Training Unit
Unlock a unique opportunity to learn from Danfoss CO₂ experts. Book the Mobile CO2 Training Unit to learn about CO2 transcritical system design, commissioning, service, and troubleshooting.
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Watch our food retail solutions video series that showcases end-to-end Danfoss solutions across key food retail applications, supporting the journey toward more sustainable and energy-efficient stores.
Highlighted products
AK-PC 782A is complete regulating units for capacity control of compressors and condensers in a transcritical CO2 booster system with parallel compressor.
The system manager is the key component of the intelligent Danfoss ADAP-KOOL® refrigeration system for food retail.
The new and improved AKVP Electric Expansion Valve with future-proof technology takes simplicity and safety to the next level. Together with the intelligent Danfoss ADAP-KOOL® controllers, you get the market’s most energy saving solution.
The CCMT is an electric operated valve designed specifically for operation in CO2 systems. The valve is capable of functioning either as an expansion valve, as a pressure regulator for the gas cooler or as a gas bypass valve with back-pressure regulation in trans-critical or subcritical applications.
CTR 3-way heat reclaim valve is designed to allow full proportional control of the surplus heat from compressor pack into the heat exchanger of transcritical heat reclaim solutions, securing availability of heat and hot water. The CTR valve prevents pressure peaks eliminating costly system down-time and the risk of insufficient heat supply for store heating and hot water, regardless of installation size.
Related applications
Your refrigeration system is the natural place to look for energy efficiency gains. To unlock that potential, you need a controller, expansion valve, and high accuracy sensors that are smart enough to make the technology work together—and a system manager that can help you see and control the bigger picture.
In air flow and indoor air quality-related applications, condition monitoring functionality improves system uptime and competitiveness by preventing issues before they occur.
Align your heating, ventilation, air conditioning, and refrigeration systems, to save money, safeguard stock, and reduce your environmental impact. Integrated solutions unlock the full potential of each application and increases the efficiency of the entire system.
Connecting your refrigeration system to the cloud offers a world of possibilities to save money and improve food safety. Remote monitoring and management make it easy to check and triage system alarm.
The Smart Store solution enhances food safety and brings down the energy bill by integrated and smart control of refrigeration, HVAC, lighting and other applications.
Learning
Food Retail CO₂ training program
Learn about Danfoss CO₂ solutions for Food Retail applications
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The Mobile CO2 training unit makes the technology and understanding of CO2 refrigeration immediately available to industry professionals. Whether you're looking to optimize system performance, improve troubleshooting skills, or understand the potential of transcritical CO2 solutions, our training unit provides a unique opportunity to learn from Danfoss CO2 experts.
Watch the phase-shifts of CO₂ recorded at the Danfoss Refrigeration R&D Laboratory, and follow the fascinating transition between solid, liquid and vapor phases in the pressure chamber and the behavior in the super-critical region.
Case studies
As momentum grows for refrigerants with Low-GWP, industry needs consider safety, environmental and economic factors. Technologies like demand-response and thermal storage are helping to decarbonize the electrical grid and shift electricity consumption, contributing to a low-GWP future.
Use this list to learn what goes into making an efficient walk-in cooler or freezer.
All over the world, the phase-down of conventional HFCs in food retail applications has become the center of attention in the effort to combat climate change. Most recently, at the meetings of the parties under the Montreal protocol in Dubai where qualitative global phase-down of HFCs was agreed with a target of quantifying the details in 2016.
In this article, we will explore the pros and cons of different solutions for CO₂ refrigeration in warmer climates – from basic cascade systems to the advanced ejector technology.
Troubleshooting
Find answers to frequently asked questions, technical documents, a complete parts list and a video library for troubleshooting.
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News
Newly released whitepaper from Danfoss details superior performance by BOCK compressors in supermarket testing
Danfoss, a global leader in sustainable refrigeration solutions, today announced the return of its Mobile Training Unit (MTU) to North America in 2025. The MTU provides hands-on training in transcritical sustainable refrigeration systems, helping original equipment manufacturers (OEM), contractors, and retailers achieve their sustainability goals and meet regulatory requirements.
As the refrigeration industry continues to navigate the transition to low-GWP refrigerants, Danfoss is looking forward to showcasing its full range of industrial refrigeration solutions at the upcoming IIAR Natural Refrigeration Conference and Heavy Equipment Expo, March 2-5, in Phoenix, Ariz. Attendees are invited to visit booth #721 to learn more about how Danfoss products and solutions are supporting industrial refrigeration customers in the transition and helping them meet sustainability goals.