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Jae O. Haroldsen

Jae O. Haroldsen has covered the HVAC&R industry for three years with a focus on natural refrigerants in residential, commercial and industrial applications. With her professional civil engineering background, Jae brings a technical lens to her reporting. As a staff writer for NaturalRefrigerants.com, she covers global policy shifts, emerging technologies and industry trends that are shaping the future of cooling.

2026-01-14Commercial RefrigerationWorld

ATMO Europe: 59% of All METRO Stores/Depots Use Natural Refrigerants

An image of Olaf Schulze, Director of Energy Management/Real Estate Sustainability at METRO Properties, presenting at ATMO Europe. He discussed decarbonization using CO2 refrigeration and propane cases.

2026-01-13Heat PumpsEurope

Interview: HotGreen Solutions’ CEO and Co-founder Details Its New Industrial Hydrocarbon Heat Pump

Hotgreen Solutions heat pump

2026-01-09Industrial RefrigerationWorld

Lauda Introduces Its First CO₂ Refrigerant-Based Process Thermostat for Laboratory and Industrial Applications

A graphic of Lauda's newly released CO2 refrigerant-based process thermostat for laboratory and industrial applications.

2026-01-06TrainingNorth America

NASRC Launches Workforce Development Initiative Under California’s F-Gas Reduction Incentive Program

An image of A training session at NASRC's Natural Refrigeration Training Summit, held in Concord, California, November 4‒6, 2025. The training covered CO2 refrigeration systems.

2026-01-05Heat Pumps

ATMO Europe: Fraunhofer ISE Highlights Developments From LC R290 Heat Pump Project for Multi-Family Homes

An image of Timo Methler, Fraunhofer ISE’s Building Heat Pump Department Team Lead, presenting at ATMO Europe 2025. He highlighted the advancements in low-charge R290 heat pumps for multi-family dwellings as part of the LC R290 project.

2025-12-18Industrial RefrigerationEurope

ATMO Europe: Zudek Modernizes Italian Brewery’s 1.6MW Ammonia Refrigeration System

An image of Jakob Terčon, Business Development Manager at Zudek, presenting about an ammonia-based refrigeration system retrofit for Birreria Pedavena in a presentation at ATMO Europe 2025.

2025-12-17Heat PumpsWorld

GEA Launches High-Pressure Screw Compressor for Ammonia Heat Pumps

An image of GEA's Grasso L XHP compressor, ideal for large-scale ammonia heat pumps.

2025-12-12Industrial RefrigerationEurope

German Produce Wholesaler Replaces R404A Refrigeration With Frigotec R290 Chiller

An image of the FrigoNatura R290 chiller installed at Fruchthof Northeim.

2025-12-10Data CentersEurope

ATMO Europe: Jaeggi’s Hybrid Dry Coolers to Provide Cooling for 12MW CERN Data Center in Geneva

Ivan Hemmeler, Jaeggi’s Business Development Manager for Spain and Portugal. Ivan presented Jaeggi's hybrid dry coolers for data center cooling at the 2025 ATMO Europe Summit.

2025-12-09Heat PumpsEurope

Enerblue Decarbonizes Railway Maintenance Hub with 900kW R290 Heat Pump System

The image of a train in a station showcases the ability to decarbonize railway maintenance hubs with R290 heat pumps.