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Alfa Laval's T21 gasketed plate heat exchanger. Photo credit: Alfa Laval

Part 1: Driving Data Center Efficiency: How Alfa Laval Turns Heat Into Opportunity

‘The forecasts we’re seeing are extraordinary – some volume projections seem almost unrealistic,’ Anna Blomborg, Head of Data Centers at Alfa Laval, told NaturalRefrigerants.com.

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Interview: Güntner’s Head of Technologies and Innovation on the Transition to Natural Refrigerants and How Its Enhancing System Performance

Michael Freiherr shared the company’s vision for the future of the HVAC&R industry with NatrualRefrigerants.com.

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NaturalRefrigerants.com has launched a directory for natural refrigerant products

ATMOsphere Launches Global Directory for Natural Refrigerant Equipment Manufacturers, Distributors, Installers and Consultants

The directory is hosted on NaturalRefrigerants.com and currently features more than 550 companies with a goal to reach 5,000 companies in 2028.

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Carly CO2 oil separator

Carly’s CEO and Technical Director Detail the Design of the TURBOIL-R-P 14 Oil Separator for Transcritical CO2 Refrigeration Systems

The TURBOIL-R-P 14 recently received UL certification and will soon be available in the United States.

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a picture of transcritical CO2 refrigeration installations in Europe

111,650 European Supermarkets and Industrial Sites Used Transcritical CO2 Refrigeration Systems in 2025

There were 106,000 food retail outlets total: 88,000 using racks and 18,000 with condensing units.

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The New York State capitol building in Albany.

Trade Groups Appeal New York Court Decision Rejecting Effort to Stop HFC Regs

AHRI and HARDI continue to argue for annulment of New York State HFC regulations based on concerns about enforcement, cost and the availability of compliant refrigerant.

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Duke University Researchers Study Potential Link Between PFAS, Including TFA, and Thyroid Dysfunction in Firefighters

Two antibodies that can sometimes disrupt thyroid function were monitored in a small number of firefighters who were tested for PFAS, including TFA, but the results to date are inconclusive.

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Clean Cooling for Data Centers 2025 is ATMOsphere's first report on data center cooling

ATMOsphere Releases ‘Clean Cooling for Data Centers 2025,’ a New Report Featuring Interviews With 9 Cooling System and Component Manufacturers

The nine companies profiled in the report are Alfa Laval, BAC, Carel, Fenagy, Jaeggi, Kelvion, Secon, SWEP and Zudek.

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Andrea Cavalet spoke to NaturalRefrigerants.com about the current state of the natural refrigerants industry in the Middle East.

‘The Middle East Is Ready to Scale Natural Refrigerants,’ Says Epta Middle East General Manager

Andrea Cavalet spoke to NaturalRefrigerants.com about the current state of the natural refrigerants industry in the Middle East.

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Ivan Rangelov, Industrial Heat Pump Manager at Danfoss. Rangelov presented about the progress industrial hydrocarbon heat pumps are making in decarbonizing the European food and beverage industry.

ATMO Europe: Danfoss Details How Hydrocarbon High-Temperature Heat Pumps Are Decarbonizing the Food and Beverage Industry

Danfoss is working with the Danish Technological Institute and Fenagy on a modular propane/butane heat pump capable of generating steam at 200°C.

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SWEP large ultra high-pressure heat exchanger installed at CMS detector location in Cessy, France. Photo credit: SWEP

Weekly Wrap-Up: Konvekta Brings CO2 Mac to the Agricultural Industry, a New Enerblue R290 Heat Pump Case Study, SWEP Helps CERN Upgrade Its Particle Detectors and More

In addition to what we published this week, these stories caught our eye.

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A team of KKL technicians. KKL is a German HVAC&R contractor recently acquired by bluu unit.

German HVAC&R Contractor KKL Details Its Work With Natural Refrigerants, Outlook on a Potential PFAS Regulation and Why It Joined Bluu Unit

CEO Patrick Peters spoke with NaturalRefrigerants.com about how his company is staying ahead of the curve.

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The European Patent Office in Vienna. The building was recently renovated with ammonia heat pumps installed for heating and cooling.

GIZ to Host Webinar Showcasing Benefits of Natural Refrigerant-Based Heating and Cooling in Building Retrofits

The event will discuss a “climate-conscious” renovation of a Vienna office with ammonia-based heat pumps for heating and cooling.

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Scott Martin of Hillphoenix, who testified at the EPA hearing on the Technology Transitions reconsideration, at the 2023 FMI Energy & Store Development Conference.

Many Stakeholders Oppose Delays to U.S. EPA’s Technology Transitions Rule

In EPA hearing manufacturers, trade groups and NGOs largely reject proposal to postpone lower refrigerant GWP limits to 2032.

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Keilly Witman advising attendees at the FMI Energy conference about the EPA's proposed reconsideration of the Technology Transitions rule and other elements of the AIM Act.

Timing of U.S. EPA’s Reconsideration of Technology Transitions Rule Raises Concerns

It needs to be finalized before January 1, 2026, or the original rule will take effect, creating confusion, noted FMI Energy conference speaker Keilly Witman.

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U.S. EPA

U.S. EPA Proposes 5- to 6-Year Delays in GWP Limits for Retail and Cold Storage

The implementation of 150 or 300 GWP limits on refrigerants in supermarket equipment would move from 2026 or 2027 to 2032, and on cold storage refrigerants from 2026 to 2032 in a reconsideration of the Technology Transition rule.

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Flow

High-Temperature CO2 Heat Pump Team Is Runner-Up in New York’s Empire Technology Prize

Flow Environmental Systems, Ambient Enterprises and Gil-Bar Industries are announced as $100,000 second-place prize winner.

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CEN

Proposed EN 378 Standard Seen as Having ‘Significant Advances’ for Natural Refrigerants

Consultant Colbourne urges stakeholders to support changes to standard in comments due to national bodies by September 25.

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Four booths at Auto Shanghai 2025 that had natural refrigerant MAC systems on display. Welling, Highly, Mahle and CCAG are the companies

These Chinese Automotive OEMs Are Building CO2 and R290 MAC Systems and Components for EVs

In addition to parts suppliers, automakers Dongfeng and CCAG are also building natural refrigerant MAC technology.

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Alberto Casnati, President of Nidec Global Appliance. Photo credit: Nidec

Embraco Enters the Residential and Commercial HVAC Sector with New Scroll Compressor Lineup That Supports R290

The new scroll compressors will also enable the company to ‘broaden its presence in the refrigeration segment.’

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NaturalRefrigerants.com articles are now available in Spanish

NaturalRefrigerants.com News Articles Are Now Available in Spanish

All articles can be translated instantly at the click of a button, with support for more languages planned.

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ATMO Awards NA 2025

ATMO America: Costco, IIAR’s Schrift and Bitzer Win ATMO Awards

The awards, honoring excellence in the implementation of natural refrigerant-based systems, were presented during a ceremony on June 11 at the ATMOsphere America Summit.

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Novum has been approved for the ATMO Approved label for the third time

ATMOsphere Reapproves Natural Refrigerants Label for Novum

The ATMO Approved label is a global gold standard highlighting best-in-class manufacturers and contractors of natural refrigerant systems and components.

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The ribbon is cut on the new Vitalis manufacturing facility

Canadian CO2 Heat Pump Manufacturer Vitalis Opens New Facility to Double Production Capacity

The 25,000ft2 site in British Columbia will help the OEM meet the growing demand for its R744-based HVAC&R technologies.

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The AdO Arena in Bergen, Norway. Photo credit: AdO Arena

Norwegian Aquatic Center Cuts District Heating Use by 1/3 with CO2 Heat Pump and Hybrid Solar Panel System

The system will deliver year-round pool and comfort heating at the AdO Arena in Bergen.

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The Seinäjoki region in Finland where the Caverion ammonia heat pump will turn waste heat into district heat

Ammonia Heat Pumps to Provide 4.9MW of District Heating to 2,000 Finnish Homes, Using Wastewater Heat

The new system, designed by Caverion, employs three 1.64 MW Sabroe DualPAC units in a modular 12 × 15m container.

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A rendering of a car with different icons around it

The Expert Opinion: A Shift Toward Natural Refrigerant Thermal Systems for Light-Duty Vehicles is Underway

Vice President of the ITB Group, Sean Osborne, shares his company’s recent research on natural refrigerants in the mobile air-conditioning sector.

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Itomic's 15kW CO2 hot water heat pump

Itomic’s President and CEO Launches New Subscription Service for Commercial CO2 Hot Water Heat Pumps in Japan

NaturalRefrigerants.com spoke with Hirofumi Moriya about his new venture.

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Equans Kältetechnik has been reapproved for the ATMO Approved Natural Refrigerants Label

ATMOsphere Reapproves Natural Refrigerants Label for Austrian Contractor Equans Kältetechnik

The ATMO Approved label is a global gold standard highlighting best-in-class manufacturers and contractors of natural refrigerant systems and components.

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Sinop's entire portfolio of beverage coolers is now either propane or isobutane. Photo credit: Sinop

Sinop Shifts to 100% Natural Refrigerants for Beverage Cooler Portfolio

The Czech manufacturer has said it produces 18,000–20,000 propane- and isobutane-based beverage coolers per year.

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The European Chemicals Agency headquarters in Helsinki, Finland

PFAS Restriction Proposal: The ECHA Is Considering ‘Alternative Restriction Options’ After Evaluating Public Comments

The current restriction options are a full ban or a ban with time-limited derogations.

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The DCT One, the CO2 heat pump from Dalrada

Dalrada’s CEO Has His Eye on the Emerging U.S. CO2 Heat Pump Market

Brian Bonar spoke with NaturalRefrigerants.com about the company’s new commercial CO2 heat pump, coming to market in 2025.

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The interior of a Lidl supermarket in Germany

Bluu unit’s New CEO Shares His Vision for the Alliance of Natural Refrigerant-Focused HVAC&R Contractors

Frank Jansing also shared how the alliance supports its members in growing their businesses and with recruitment and training.

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The headquarters of the Environmental Protection Agency. The EPA SNAP 27 rule was recently proposed by the EPA.

Trump-Linked Project 2025 Calls for Repeal of ‘Unnecessarily Costly’ HFC Regulations

The conservative document, opposed by the Harris presidential campaign, also warns of ‘new restrictions that further skew the market toward costlier refrigerants and equipment.’

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The Danfoss booth at Chillventa 2024

Chillventa 2024: Danfoss Announces Prototype Residential R290 Heat Pump with 130g Charge

The water-to-water heat pump has a capacity of 4.7kW and a COP of 3.85.

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Jennifer Granholm

Five U.S. Companies Developing CO2 Heat Pumps Get Funding from Department of Energy

The Department of Energy will support Ecotope, NETenergy, GTI Energy, Effecterra and Harvest Thermal

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Felix Nowak-Walenta, Thermal Management Test Engineer at Volkswagen, presenting at the ATMO MAC Summit 2024.

ATMO MAC: Volkswagen Outlines How R744 Heat Pump System Benefits Thermal Management Operation of its EVs

Several hundred thousands electric vehicles equipped with the system have been sold since it first launched in 2020, according to VW.

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Shinwa Controls has said its Oberon chiller is the world’s smallest ultra-low-temperature chiller. (Source: Shinwa Controls)

Shinwa Controls Joins NaturalRefrigerants.com as Silver Partner

The Japanese manufacturer specializes in advanced refrigeration chillers, precision air-conditioning equipment and valve products.

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An aerial view of Helsinki in winter. The city will soon have a new Helen district heating plant using a CO2 heat pump.

Finnish Energy Company Helen Says New Helsinki District Heating Plant Will Feature a ‘First of Its Size’ CO2 Heat Pump

The air-to-water CO2 heat pump will have a heating capacity of 20–30MW and will reduce emissions by 30,000 metric tons of CO2 annually.

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A top 5 stock image for the NaturalRefrigerants.com top 5 stories of May article.

Preserving CO2 Charge in a Power Outage, Copeland’s Investment, Big MAC News and More: NaturalRefrigerants.com’s Top 5 Stories of May

Rounding out the top five was the acquisition of CO2 heat pump and chiller maker Vitalis by KKVB Group, parent company of TEKO.

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Scantec Austalia

Stefan Jensen of Scantec Refrigeration Technologies Details the Roadblocks Facing Natural Refrigerants in Australia

The company’s Managing Director spoke to NaturalRefrigerants.com about HFO regulations, training and resistance to ammonia AC.

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ATMO Awards

Vote for the ATMO/North America Innovation and Person of the Year!

The innovation short list features products from Hillphoenix, Copeland, Dorin and Evapco; the person shortlist includes individuals from EIA, NASRC, Hillphoenix and Evapco.

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A top 5 image logo

NaturalRefrigerants.com’s Top 5 Stories of April

Our most-read stories include a study linking HFOs to HFC-23, a small U.S. OEM’s big expansion plans and new Zero Zone equipment.

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Global warming

Study Links HFOs to Formation of Super Greenhouse Gas HFC-23

Atmospheric HFO degradation products TFA and TFE, the study says, have pathways to generating HFC-23, which has a GWP of 14,600.

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EPA HQ

U.S. EPA Finalizes Rule Cutting HFCs by 40% in 2024–2028

HFC allowances for production and import in 2024 will be delivered by September 29.

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Masafumi Okuda, AEON, presenting on natural refrigerants in Japan at the ATMO APAC Summit 2024.

ATMO APAC: Subsidies Are ‘Key’ for Japan’s Transition to Natural Refrigerants, Says AEON

As of 2022, the multinational retailer has installed natural refrigerant-based equipment in more than 1,400 of its Japanese stores.

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Howe ENERGY STAR Partner of the Year – Sustained Excellence

Howe Receives Second ENERGY STAR Partner of the Year – Sustained Excellence Award

EPA recognized the company for investing in energy-efficient CO2 ice makers for commercial applications.

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Canadian Meat Processor Cuts Carbon Emissions with Ammonia Heat Pump System

ATMO America: Canadian Meat Processor ‘Does What Is Right,’ Cutting Carbon Emissions with Ammonia Heat Pump System

By using an ammonia (R717)-based heat pump system in place of a “mish-mash” R22, R404a and R507 refrigeration system, Canadian meat processor Conestoga Meats has cut its annual carbon emission by 3,000…

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Epta’s new Spices range of R290 plug-in cases includes an open semi-vertical (Pepper), an open vertical (Ginger) and a closed vertical (Vanilla). (Source: Epta)

Epta Launches New R290 Plug-in Cases with Enhanced Product Visibility

The Spices range consists of three models that are designed to offer product preservation, easy accessibility and a lower carbon footprint for food retailers of any size.

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Johnson Controls' OpenBlue Innovation Center in Cork, Ireland.

Johnson Controls Acquires Hybrid Energy, Producer of Ammonia Absorption/Compression Industrial Heat Pumps

The acquisition expands JCI’s high-temperature industrial heat pump offerings to temperatures over 100°C.

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