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Variable refrigerant flow

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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

Variable refrigerant flow components in a typical system:

Variable refrigerant flow application diagram

Highlighted products

  • if (isSmallPicture) { Product group photo of refrigeration temperature sensors by Danfoss; } else if (isBigColumns) { Product group photo of refrigeration temperature sensors by Danfoss } else { Product group photo of refrigeration temperature sensors by Danfoss }
    Refrigeration temperature sensors

    Refrigeration temperature sensors are used for applications within air-conditioning as well as commercial and industrial refrigeration applications. The Pt 1000 sensor element meets the DIN/IES 751 class B requirements and ensures an accurate and reliable temperature signal applicable for regulation, safety and data logging.

  • if (isSmallPicture) { Product photo of the Danfoss line of solenoid valves for HVAC; } else if (isBigColumns) { Product photo of the Danfoss line of solenoid valves for HVAC } else { 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.

  • if (isSmallPicture) { Product photo of the NRV refrigeration check valves by Danfoss; } else if (isBigColumns) { Product photo of the NRV refrigeration check valves by Danfoss } else { 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.

  • if (isSmallPicture) { Photo of the Danfoss family of filter driers; } else if (isBigColumns) { Photo of the Danfoss family of filter driers } else { 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.

  • if (isSmallPicture) { Pressure switches and Thermostats - Danfoss; } else if (isBigColumns) { Pressure switches and Thermostats - Danfoss } else { Pressure switches and Thermostats - Danfoss }
    Pressure switches and thermostats for refrigeration

    The range of pressure switches and thermostats cover a lot of applications within refrigeration and air conditioning. The pressure switches and thermostats are in two categories: KP as standard and RT for heavy duty purposes. The switches can be delivered for fluorinated refrigerants as well as ammonia.

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