CO₂ Refrigeration
263 articles 8 case studies 52 insights
CO₂ works as a refrigerant everywhere, but not equally well everywhere: in warm climates the argument has always been about running cost, not feasibility. Refindustry follows the technology across retail, cold logistics, industrial plants and heat recovery: daily news, paid case studies with the figures their owners reported, and interviews with the engineers building these systems.
Case studies on CO₂
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Refra Delivers Advanced CO2 Refrigeration Systems for Major London Depot
Refra
Breaking new ground in transcritical CO2 systems
SWEP
Smart cooling, sustainable heating – Migros turns to Eliwell to boost its refrigeration efficiency
ELIWELLInsights on CO₂
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Chillventa 2026 Preview: Key Technologies Ahead of the October Show
Exhibitors arriving in Nuremberg on 13 to 15 October are no longer arguing about whether to move to natural refrigerants. They are showing how fast the move can be made, and at what cost. That single change of question runs through nearly every release we have received ahead of Chillventa 2026, the largest edition of
A2Ls Are Not a Bridge: Heatcraft on Refrigerant Choice in North America
Sergei Mukminov, Editor-in-Chief of Refindustry.com, interviewed David Bolaños, Director of Marketing and Product Management at Heatcraft Refrigeration Products, about the direction of the North American commercial refrigeration market and the thinking behind the company's refrigerant strategy. The interview was conducted in writing in August 2026. It comes at a point when the regulatory ground has
Beyond Refrigeration: How CO₂ Systems Are Becoming the Energy Hub of Modern Food Retail
The Danfoss Smart Store ADC in Nordborg. Source: Danfoss A/S. A Danish convenience store covered 100 percent of its heating demand from refrigeration waste heat through the coldest winter in more than a decade. Over two years of operation, the same site exported 36 MWh of surplus heat to its city's district network and saved close
News on CO₂
Arneg Korea highlights CO2 refrigeration at South Korea workshop
More than 200 CO2 installations are due online as a supermarket case study showed a 38.4% reduction in electricity consumption.
KARYER Supports CO2 Transcritical Refrigeration Training in India
The operational model lets engineers observe system behavior in real time while studying CO2 cycles, safety, regulations and HFC comparisons.
FAPRO-ETP Opens Free CO2 and R-290 Training in Brazil
The 40-hour program will train 96 technicians across six classes, with 70% of instruction devoted to practical work.
Frascold updates discharge valve for CO2 Heavy Duty compressors
The compact one-piece design is intended to improve impact and vibration resistance, with updated dimensions available through FSS3.
Sanhua Expands R744 Portfolio with CDF-T Solenoid Valves
The range targets transcritical CO2 systems with compact, low-power valves for flow control, hot gas bypasses and defrost.
NASRC Trains 1,079 Technicians in Natural Refrigeration
The 2025-26 summit series drew 1,756 participants and expanded CO2 education with new workshops, an industrial track and a New York debut.
Frascold validates new electrical box for CO2 compressors
The IP66-rated design adds wiring space, cable routing and 9-pin support while retaining existing mounting points.
Danfoss adds OUB to CO2 oil management portfolio
Three serviceable and hermetic variants support pressures up to 140 bar, with filtration options tailored to demanding applications.
Walter Roller Invests in Test Cell for CO2 Air Coolers
The double-chamber facility supports DIN EN 328 measurements and defrost optimization across cooling capacities from 3 to 15 kW.
IRN 2026 to Host Star Refrigeration Session on Natural Refrigerants
Updated modelling will compare ammonia and CO2 systems on lifecycle cost, energy performance and resilience.
Danfoss Reports 21% Energy Savings with CO2 Multi Ejector
Supermarket trials found the ejector cut compressor cycling by 43–47% while improving transcritical CO2 efficiency in warm conditions.
Epta showcases EptaTechnica refrigeration systems
The portfolio spans compact convenience-store units to customised hypermarket power packs, backed by energy and payback consulting.