The Official Magazine of the All-Natural Refrigeration Industry

The IIAR Condenser Magazine is a quarterly publication that contains technical articles, regulatory and code updates, industry news and information about IIAR activities and publications. It is distributed by email to all IIAR Members and IIAR Contact lists.

WINTER 2026 NATURAL REFRIGERATION REVIEW

The Natural Refrigeration Review issues are available as a PDF downloads for both lIAR Members and Non-members, or as individual article posts below. Click the button below to view the full issue, or scroll through all the individual issue articles below.

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2025 Technical Paper #14

Sustainable Solutions for Agricultural Cold Storage: A Case Study

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2025 Technical Paper #13

Using Scorecards to Manage and Improve your RMP/PSM Program

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2025 Technical Paper #12

Interior Ammonia Release: Dispersion, Ventilation, and Hazardous Zone of the Negligible Extent Volume

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2025 Technical Paper #11

CO2 systems: Lubricants and Oil Management Strategies

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2025 Technical Paper #10

Understanding Water Treatment Performance

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2025 Technical Paper #9

Lessons Learned from a Collection of Ammonia Incident Investigations

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2025 Technical Paper #8

Applications of Ammonia and Carbon Dioxide for Decarbonization and Markets Other Than the Food and Beverage Refrigeration Industry

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2025 Technical Paper #6

Refrigeration System Design Using Float Expansion Valves

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2025 Technical Paper #5

CO2 Heat Pumps: System Solutions and Applications Mapping

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2025 Technical Paper #4

Livin’ la Vida LOPA: A Case Study in the Application of HAZOP and LOPA for Ammonia Refrigeration Systems

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2025 Technical Paper #3

Connecting Cooling and Process Heating in Industrial Applications with Natural Refrigerants

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2025 Technical Paper #2

Getting Knocked Out by the Pendulum: The 2024 EPA RMP Rule Changes and Strategies for Compliance

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Johnson Controls Announces New Chief Executive Officer

Johnson Controls announced that its Board of Directors has appointed Joakim Weidemanis as Chief Executive Officer effective March 12, 2025. The announcement followed the Company's Annual General Meeting of Shareholders. He succeeds George R. Oliver following a thorough succession planning process.  The company said that "Weidemanis is a seasoned operator with a successful track record in leading global technology-driven businesses and delivering profitable growth. He held several executive leadership roles over his 13-year career at Danaher Corporation providing him with extensive experience scaling global companies from a foundation of customer orientation, innovation and efficiency."

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RSES Releases Fourth Edition of Hydrocarbon Refrigerants Study Guide

The Refrigeration Service Engineers Society said it has released a fourth edition of its Hydrocarbon Refrigerants study guide, exam and eLearning course through the RSES online store. RSES said the materials cover the most recent practices for refrigerant families including HC R-290 (propane); HC R-600a (isobutene); HC R-441A (a blend); HC R-170 (ethane); HFC R-32 (difluoromethane); and HFC R-454B.

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A Breakthrough for Low-Charge Ammonia Systems and Energy Efficiency

In a world where energy efficiency and sustainability are no longer optional, industrial refrigeration companies are now leveraging advanced technologies and innovative practices to not only meet regulatory demands, but also to redefine what it means to achieve operational success.

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Hillphoenix Supplies CO2 Systems for Puerto Rico Supermarket

Hillphoenix said it has supplied CO2 Systems for Puerto Rico’s First-Ever All CO2 Refrigerated Supermarket. The installation of the CO2 system at the supermarket, called Ralph’s, was a collaborative effort involving the expertise of Hillphoenix and the dealer, Triple S International, the company said.

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IIAR Releases Tool to Compare Refrigerants

The International Institute of Ammonia Refrigeration said it has released a “Refrigerant Evaluator Tool” to help IIAR members and others assess their refrigerant choices and evaluate their options as the Environmental Protection Agency phases out high global warming potential refrigerants. The IIAR Refrigerant Evaluator Tool can be found here: https://refrigerantcomparison.com/. John Flynn, the Chair of the IIAR Education Committee, the committee responsible for the creation of the new tool, said refrigerant choices outside of the world of natural refrigerants have gotten more complex as a result of the phaseouts, making IIAR’s newly released comparison tool a valuable resource for anyone trying to compare the performance and efficiency of different refrigerants.

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IIAR State Of The Industry Report

The 8th edition of the State of the Industry Report has evolved to include more information from IIAR Survey questions and observations of industry leaders. Emerging information on regulatory and training developments and IIAR’s influence on the industry continues to grow.

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IIAR Releases New CO2-Focused Promotional Video

The International Institute of All-Natural Refrigeration announced that it has released a new video aimed at educating the public on the economic and environmental benefits of natural refrigerants, specifically CO2. The new video is also positioned as a B2B marketing tool, encouraging business leaders to visit iiar.org to learn more about natural refrigeration and how converting to natural refrigerants can help them save money and improve efficiency. “One of IIAR’s main roles is to promote the efficiency and safety of natural refrigerants, and this video helps us communicate those benefits to a broader audience,” said IIAR President Gary Schrift.

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GEA Announces New HSX High-Pressure Float Valve 

Valve manufacturer GEA AWP said it has developed a new high-pressure float valve for NH3 and CO2 refrigeration and cooling processes. The HSX high-pressure float valve is designed for industrial applications such as cold storage, transportation, chemical processing, cement production and the pharmaceutical industry, the company said. 

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