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.

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

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Brochure	Danfoss Extended Oil-free Program	English	Multiple	01 Apr, 2026	3.8 MB	.pdf
Brochure	Danfoss Solutions for Chillers	Italian	Multiple	19 Mar, 2018	3.7 MB	.pdf
Brochure	Danfoss Solutions for Chillers	Russian	Multiple	27 Jun, 2019	2.8 MB	.pdf
Brochure	Danfoss Solutions for Chillers	English	Multiple	13 Apr, 2020	3.9 MB	.pdf
Brochure	Danfoss Solutions for Chillers	Spanish, Castilian	Multiple	25 Oct, 2018	44.2 MB	.pdf
Brochure	Danfoss Solutions for Chillers	Chinese	Multiple	18 May, 2017	2.3 MB	.pdf
Brochure	Danfoss Solutions for Chillers	French	Multiple	28 Oct, 2018	44.2 MB	.pdf

Related products

PTS staging valves

PTS stepper motor staging valves for fast, reliable surge prevention in oil-free centrifugal chillers and heat pumps. The valves open quickly at startup and release pressure at shutdown, enabling stable operation, optimal compressor pressure ratios, high flow capacity and long-term efficiency in demanding applications.

OFC check and stop valves

OFC type check and stop valve are designed for delivering a discharge solution that improves performance and reliability of oil-free centrifugal compressors with magnetic bearings.

NRV refrigeration check valves

NRV and NRVH can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants with fluorinated refrigerants. NRV and NRVH can be supplied with flare and solder connections. They are also available with oversize solder connections providing flexibility in the use of check valves.

Solenoid valves for HVAC-R

Solenoid valves for A/C and commercial refrigeration for fluorinated refrigerants and CO₂ (R744). Solenoid valves and coils are normally supplied separately and then assembled without tools, providing optimum flexibility and product availability.

Programmable controllers - MCX

Danfoss’ range of universal MCX programmable controllers offers the functionality and reliability you need to get the best out of your heating, ventilation, air-conditioning and refrigeration (HVAC/R) equipment.

Related applications

Chillers

Energy consumption is a key driver for building owners when it comes to chillers. Depending on the building size, type, and use, as well as the surrounding climate, you need different options for your chiller designs to provide the most value to your customers and differentiate yourselves in the market.

Coolant distribution units for data centers

Optimize your data center’s thermal management with Danfoss comprehensive range of Coolant Distribution Unit (CDU) components and application expertise.

Heat pump solutions

Energy efficient and environmentally friendly heat pump solutions are essential in all modern heating and cooling of residential and commercial spaces.

Contact us

For further information, please contact us.