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Danfoss

Variable refrigerant flow

Popular solution across the world

Variable Refrigerant Flow systems (VRF) are quickly becoming popular for air conditioning solutions across the world. VRF systems not only provide flexible and energy efficient air conditioning, but also heating and hot water for residential and commercial applications.

Some of the features of this type of an air conditioning system with variable refrigerant flow include:

  • Cooling only, or reversible for heating, including heat recovery options
  • Air or water cooled systems
  • Variable capacity compressors
  • Optimized for a number of conventional and environmental refrigerants
  • Up to 64 indoor units with individual metering

Features and benefits

  • Compact, space-saving components

  • High energy efficiency

  • Optimized for environmentally friendly, low GWP refrigerants

  • Reduced applied costs and short payback times

  • Dedicated technical and customer service around the world

  • Eco labelling options

Application diagram

Variable refrigerant flow components in a typical system:

Variable refrigerant flow application diagram

Highlighted products

Danfoss' family of compressors for air conditioning and heating
Compressors for air conditioning & heating

Compressors for air conditioning, providing enhanced comfort, efficiency and sustainability for rooftops and chillers, commercial applications with refrigerants R410A, R407C, R134a and R22.

Photo of the Danfoss family of filter driers
Filter driers

Filter driers in hermetic design are ideal for commercial refrigeration applications requiring high drying capacity to prevent acid formation in the system.

Product photo of the Danfoss line of solenoid valves for HVAC
Solenoid valves for HVAC-R

Solenoid Valves for refrigeration applications, standard types for fluorinated refrigerants and ammonia (R717) as well as solenoid valves for water and brine. The category also contains solenoid valves in stainless steel, gas powered valves and pulse solenoid valves.

Product photo of the various ball valves available by Danfoss
GBC shut-off ball valves

Manually controlled, bi-directional shut-off valves for refrigeration, available with or without an external access port.

Product photo of the NRV refrigeration check valves by Danfoss
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.

Contact us

For further information, please contact us.