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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.

2026-04-03RechenzentrenEuropa

LU-VE Evaporators to Support 1.5MW Transcritical CO₂ Cooling System for Spanish Data Center

An image of a data center. LU-VE supplied evaporators for a CO2 cooling system for a data center in Paterna, Spain.

2026-03-16Heizung und LüftungEuropa

Interview: HYTING’s Founder Discusses Catalytic Hydrogen Air-Heating, Peak Shaving and Global Growth

An image of HYTING's Catalytic Hydrogen Air-Heating System at the Flusys facility in Offenbach, Germany.

2026-03-11Gewerbliche Kältetechnik mit KältemittelnNordamerika

Danfoss Multi-Ejector HP with Parallel Compression Reduces CO₂ System Energy Use by 21% Compared to Traditional Boosters

An image of Danfoss' Danfoss Multi-Ejector CTM-6

2026-03-11Medizinische KältetechnikWelt

Hamilton Storage Transitions Automated Ultra-Low-Temperature Portfolio to Natural Refrigerants

An image of a BiOS automated ultra-low temperature unit in a biobanking application. The unit used CO2, R290 and R170 refrigerants.

2026-03-10WärmepumpenWelt

Trane Expands R290 Heat Pump Portfolio With 125kW Modular and 230kW Packaged Units

An image of Trane's ARIES N HP, a R290 air-to-water modular unit for commercial and industrial applications.

2026-03-05WärmepumpenEuropa

Daikin Launches Modular R290 Heat Pump/Chiller, With Capacities from 20 to 85kW

Daikin's R290 EWA/YK-CZ air-to-water heat pump chiller.

2026-03-02Gewerbliche Kältetechnik mit KältemittelnNordamerika

Heatcraft Unveils 90Bar CO₂ Low-Profile Cooler and 15HP CO₂ Condensing Unit

An image of Heatcraft's booth at AHR Expo 2026, showcasing new CO2 products and training.

2026-02-27Gewerbliche Kältetechnik mit KältemittelnEuropa

Bluu Unit Continues European Expansion with the Acquisition of Irish HVAC&R Contractor

An image of Tech Refrigeration and Air Conditioning's building with an Irish flag, with text indicating that the company has joined bluu unit as part of the natural refrigerant alliance.

2026-02-25Gewerbliche KlimatechnikAsien

China: Sustainability Upgrade at Ordos Airport Includes CO₂ Heating and Cooling

An image of Güntner evaporators roof-installed at the Ordos Ejin Horo Airport in China for the facility's CO2 heating and cooling system.

2026-02-24WärmepumpenNordamerika

Flow Environmental Services, St. Paul Local 455 Team Up for CO₂ Heat-Pump Training and Demonstrations

An image of St. Paul Steamfitters/Pipefitters Union (Local 455) where Flow Environmental Systems installed an ANSWR CO2 heat pump for training and demonstrations.