NaturaLINE® Container Refrigeration Unit

The world's first natural refrigerant technology for container refrigeration.

The first and only technology of its kind, the NaturaLINE reefer unit incorporates CO₂ in place of conventional synthetic refrigerants to deliver sustainability and efficiency equal to our best-in-class performer. This natural refrigerant-based solution is the most environmentally sustainable alternative for refrigerated marine transport. It’s the future of container refrigeration – brought to you by the natural Leaders at Carrier.

Global warming potential (GWP) of 1
Power consumption comparable to Carrier’s best-in-class performer
Best-in-class carbon footprint
No CO₂ refrigerant tax
No intermediate refrigerant step
Familiar controls and maintenance
Global support from Carrier

ul-logo The NaturaLINE unit has been validated by UL Environment as having a 95 percent recyclability rate, joining Carrier’s PrimeLINE^® unit as the only container refrigeration units to achieve recyclability validation.

Carrier has been a pioneer in sustainability from the very beginning. We were among the first companies to launch factory energy reduction goals and we led a worldwide chlorofluorocarbon (CFC) phase-out years before the deadline set by international laws and regulations for developing countries. We have always designed with the environment in mind, innovating new products and technologies that avoid waste and preserve resources for future generations.

Now, building on our legacy of sustainability, we’ve created the future of container refrigeration. Naturally.

The first natural-refrigerant based solution ever developed for marine container shipping, the NaturaLINE^® unit delivers an environmentally sustainable alternative for refrigerated marine transport. Just as our PrimeLINE^® unit raised the bar for energy efficiency, the NaturaLINE unit sets a new standard for sustainability. By using carbon dioxide (CO₂) as a natural refrigerant, the NaturaLINE design reduces the impact on environment caused by refrigerant leakage or end of life recovery compared to units using synthetic refrigerant.

NaturaLINE^® means new technology

Uses carbon dioxide (CO₂) as a natural refrigerant and has Global Warming Potential (GWP) of 1.
Multi-Stage Compressor - NaturaLINE’s design makes use of an exclusive, new multi-stage compressor that maximizes capacity while minimizing power consumption.
Variable-Speed Drive - A custom-designed variable-speed drive electronically adjusts compressor speed to provide the precise amount of cooling capacity when needed.
Gas Cooler Coil - Compact and lightweight by design, the gas cooler coil wraps around the fan to maximize heat-transfer surface area for greater efficiency.
Flash Tank - For efficient cooling performance, the flash tank manages the flow and phase change of the refrigerant after leaving the gas cooler.
Two-Speed Fans - The NaturaLINE unit’s evaporator and gas cooler use two-speed fans, offering greater versatility and energy-saving performance.
Advanced Operating Software - The NaturaLINE unit’s operating software has been reengineered to manage its unique mechanical system, providing the same easy-to-use Micro-Link^® 3 control interface found throughout our container lineup.
Zero-GWP Foam - The polyurethane foam blowing agent technology used in the NaturaLINE unit has high insulation properties without contributing to GWP.
For long-life and corrosion resistance, the gas cooler takes advantage of Carrier’s patented e-coat technology, and the compressor, flash tank, and filter drier have aluminized coatings.

Cooling Capacity: Ambient @ 38°C (100°F) and 60 Hz power with Purpose built R744 Compressor

Temperature	Watts	Btu/hr
2°C (35°F)	9,400	32,000
-18°C (0°F)	6,000	20,500
-29°C (-20°F)	4,400	15,000

Specifications are subject to change without notice.

OVERVIEW

Now, building on our legacy of sustainability, we’ve created the future of container refrigeration. Naturally.

KEY FEATURES

NaturaLINE^® means new technology

Uses carbon dioxide (CO₂) as a natural refrigerant and has Global Warming Potential (GWP) of 1.
Multi-Stage Compressor - NaturaLINE’s design makes use of an exclusive, new multi-stage compressor that maximizes capacity while minimizing power consumption.
Variable-Speed Drive - A custom-designed variable-speed drive electronically adjusts compressor speed to provide the precise amount of cooling capacity when needed.
Gas Cooler Coil - Compact and lightweight by design, the gas cooler coil wraps around the fan to maximize heat-transfer surface area for greater efficiency.
Flash Tank - For efficient cooling performance, the flash tank manages the flow and phase change of the refrigerant after leaving the gas cooler.
Two-Speed Fans - The NaturaLINE unit’s evaporator and gas cooler use two-speed fans, offering greater versatility and energy-saving performance.
Advanced Operating Software - The NaturaLINE unit’s operating software has been reengineered to manage its unique mechanical system, providing the same easy-to-use Micro-Link^® 3 control interface found throughout our container lineup.
Zero-GWP Foam - The polyurethane foam blowing agent technology used in the NaturaLINE unit has high insulation properties without contributing to GWP.
For long-life and corrosion resistance, the gas cooler takes advantage of Carrier’s patented e-coat technology, and the compressor, flash tank, and filter drier have aluminized coatings.