Zero Oil. Full potential.

Designed oil-free. Delivered as a system.

As the pioneers of oil-free technology, innovation at Danfoss is more than a promise. It’s our way of empowering HVAC professionals to drive the market. Building on the proven success of Danfoss Turbocor® compressors, our Extended Oil-free program (EXO) is growing to unlock your full system potential

Oil-free technology eliminates the complexity and performance limitations associated with oil-lubricated systems. Without oil management systems, chillers and heat pumps can operate with simpler architectures, fewer service requirements, and stable efficiency throughout their lifetime, helping facilities achieve lower lifecycle costs and greater operational confidence.

The Danfoss Extended Oil-free program (EXO) brings together all key components for high-performance oil-free systems, including Danfoss Turbocor® compressors, advanced controls, and our range of valves for oil-free applications: OFC, OFB, PTS and gas sensors. These technologies ensure maximum energy efficiency and reliability in even the most challenging building environments.

By integrating compressors, valves, controls, sensors, and supporting technologies into a complete, purpose-built ecosystem, Danfoss enables OEMs and system designers to build oil-free chillers and heat pumps that perform reliably across a wide range of operating conditions. The result is optimized system efficiency, minimal pressure losses, and dependable operation from startup to shutdown.

This integrated approach is particularly valuable for mission-critical applications such as data centers, hospitals, educational facilities, and industrial processes, where cooling performance directly affects operational continuity. Oil-free systems deliver consistent part-load efficiency, lower noise levels, and compact system designs—while helping operators reduce maintenance requirements and downtime.

Backed by Danfoss global application expertise and technical support, the EXO ecosystem provides HVAC professionals with a future-ready platform for designing high-efficiency systems that meet today’s energy, reliability, and sustainability demands.

Features and benefits

Complete portfolio engineered for oil-free HVAC systems
Stable efficiency with zero oil-related performance loss
Lower maintenance, reduced operating costs, and faster payback
High capacity and flexibility for demanding applications
Compact, lightweight, and exceptionally quiet systems
Dedicated global technical and customer support

Unlock the full potential of oil-free systems

Explore the technology behind next-generation oil-free cooling system. Building on the proven success of Danfoss Turbocor® compressors, the Extended Oil-free program (EXO) unlocks the full potential of your system with purpose-built components that deliver higher capacity, lower lifecycle cost, and unmatched efficiency. Learn how to achieve maximum performance with zero oil and zero compromise.

Turbocor® — oil-free efficiency for chillers and heat pumps

Danfoss Turbocor^® compressors are the world’s first oil-free magnetic bearing compressors for the HVAC industry, designed to deliver high efficiency, low sound levels, and reliable performance in a compact footprint. Oil-free magnetic bearings help maintain consistent performance over time with zero performance degradation caused by oil-related issues.

With built-in permanent magnet motor and variable speed drive, Turbocor^® compressor provide best in class full- and part-load efficiency for air-cooled and water-cooled chillers, heat pumps and heat recovery. The portfolio covers 40 to 450 TR and is compatible with low-GWP refrigerants including R1234ze, R513A, and R515B.

Learn more about Turbocor®

PTS — anti-surge staging valves for centrifugal systems

PTS improve the performance and reliability of both oil and oil-free centrifugal chillers and heat pumps. These valves offer extremely fast operation, within just 5 seconds, to prevent compressor surge and ensure stable system performance during both startup and shutdown. To learn more about PTS valves, click here.

Watch the video about PTS

OFB: tight oil-free shut-off ball valve for Turbocor® systems

Discover how the OFB tight oil-free shut-off ball valve enhances reliability and prevents refrigerant migration in Turbocor® chillers and heat pumps. If you are interested in the newly developed tight oil-free shut-off ball valve engineered for oil-free chillers and heat pumps featuring Turbocor® compressors, read more here.

Watch the video about OFB

OFC — an innovative discharge solution for oil-free chillers

The OFC valve was designed to improve oil-free systems efficiency and reliability.

Explore how Danfoss's Application Development Center in Haiyan, China tests showed the OFC check and stop valve can boost energy efficiency by 3% in water‑cooled chiller systems with Turbocor® compressors—unlocking potential savings in both system design and operating costs, in the article here.

Watch the video about OFC

DST G4ze — gas sensor for refrigerant leak detection

DST G4ze gas sensors are designed for reliable detection of R1234ze in HVAC and refrigeration systems. The sensor continuously monitors refrigerant concentration and provides a signal to the system controller, supporting early leak detection and compliance with safety requirements for mildly flammable refrigerants.

With a compact design and fast response, DST G4ze helps enable safe operation of systems, making it suitable for applications like heat pumps, chillers, and commercial refrigeration equipment.

Learn more about gas sensors

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Brochure	Danfoss Solutions for Chillers	English	Multiple	13 Apr, 2020	3.9 MB	.pdf

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