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

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Train expands KR 290 heat pump portfolio with 125 kW modular and 230 kW packaged units by Michael Garry. Published March

10th 2026.

Global HVAC manufacturer Train, a subsidiary of Ireland based Train Technologies, has expanded its propane air-to-water heat pump portfolio with

the launch of Flex NHP and up to 125 kW 35.5 tons modular unit and Aries NHP and

up to 230 kW 65.4 tons package solution.

Safety features on the new products include ATEX certified leak management systems, relief valves, and an optional gas water separator. Both units will be manufactured at Train Technologies

European factory in Charms, France, and sold across Europe, the Middle East, Africa, Australia, and New Zealand.

Flex NHP and Aries NHP reflect our long-standing dedication to solutions built around real world customer needs, said Eric Vanusen, product management leader at Train. These platforms show

how we continue to expand high efficiency, lowcarbon options for commercial and industrial customers.

The manufacturer entered the R290 heat pump market in February 2024 with the launch of the Train Leaf, an air-to-water unit designed for residential and light commercial applications.

Train Leaf provides heating, cooling, and hot water production with capacities ranging from 8 to 30 kW, 2.3 to 8.5 tons of refrigeration. An optional modularity

of refrigeration. An optional modularity kit allows combining up to four units.

Flex NHP, the modular unit with full inverter scroll technology, offers efficient operation across varying loads according to train. It achieves SOPs of up to 4.5 in typical operating

conditions. The modularity allows

conditions. The modularity allows combining up to six units to support heating capacities greater than 700 kW, 199 tons of refrigeration.

Each refrigerant circuit contains less than 5 kg of propane. When multiple

modules are installed, an optional safety interlock kit shuts down nearby units in the event of a leak. Flex NHP

produces outlet temperatures as high as 77° C, 171° F in ambient conditions as

low as -20° C, -4° F.

Aries NHP, the package solution features a double circuit configuration using scroll compressor technology. It

achieves an escopy of up to 4.3 in typical operating conditions. According

to Train, it produces outlet temperatures as high as 75° C, 167° F in

ambient conditions as low as -20°.

Aries NHP's design, layout, and dimensions align closely with traditional HFC based units, simplifying the retrofit process for customers

upgrading existing systems. Train said transport innovation. Thermoking, a

transport innovation. Thermoking, a brand of Train Technologies, has developed a prototype of a propane maritime shipping container, Reefer, with a Costa Rican fruit producer to validate the proof of concept in June

2026.

The prototype was developed in collaboration with GIS, German Society for International Cooperation as a proof of concept for R290 reefers.

The direct expansion architecture of the R290 reefer features a variable speed compressor with vapor injection through an economizer, said Santiago Martinez, laboratory manager and core

refrigeration lead at the king in a presentation at the Atmo Max Summit 2025 times TU Berlin. The event hosted by Atmosphere and Technicia University TU

Berlin's department of heat transfer and heat conversion took place September 23rd to 24th. Atmosphere is the publisher of natural refrigerants.com.

Simulations conducted by the universe tat poly techchnica de Valencia show promising results. Martinez noted adding

promising results. Martinez noted adding that at 30 hertz the R290 prototype cuts power consumption by 7% compared to the company's R134 AE container fresh and

frozen reefer.

Quotable building owners are demanding solutions that lower their operating costs and carbon footprint while ensuring safe, robust yearround performance, said vanin.

With the addition of these units, Train becomes the only manufacturer to offer a full lineup of R290 systems spanning heat pump and chiller segments, giving customers unmatched choice and flexibility across all applications.

options.