It’s not uncommon for people to question the difference between VRV and VRF Aircon Systems. But fret not, we’re here to clear the confusion.

To start off, VRV and VRF air con systems are technically the same. However, Daikin has copyright the term VRV, while other aircon brands use VRF to refer to their own HVAC systems.

Daikin’s VRV (Variable Refrigerant Volume) systems first emerged in the 1980, pioneering one of the first HVAC systems. As most brands refer to it as VRF (Variable Refrigerant Flow), the term caught on and became more popularly known compare to VRV.


Now that you know that VRV and VRF are essentially the same, it’s time to learn more about its technicalities. Here are some of the principles of this system:

  • In this kind of air conditioning system, the only coolant material is the refrigerant. As such, the refrigerant will the only one responsible for cooling the water circulated throughout the entire system.
  • It will have inverter compressors, which allow lower power consumption.
  • There will be several air handling units connected to the same refrigerant circuit.
  • Allows modular expansion involving huge project that grow in small stages.


The logic behind the operation of VRV and VRF systems largely depends on the manufactured and is usually not disclosed. However, in such systems, the input will be influence by the outside temperature of the surroundings as well as given by the user depending on his/her desired temperature. The system then receives the data, after which its logic is implement in order to provide the most suitable temperature for the area while ensuring optimal power consumption.

Let’s see how a typical VRV and VRF system worked:

Initially, the system will be in standstill condition, which means that everything is turned off. Once the user turn on one of the indoor units, the VRV or VRF system then starts working.

The VRV or VRF air con system will then examine the outside temperature and that of the room. Accordingly, the compressor will start operating to match the indoor requirement.

The process then automatically repeated itself when another indoor unit is switched on. As additional indoor units are used, the power consumption regulates itself accordingly depending on the demand.

Users can then achieve their desired comfort conditions by adjusting the fan speed, temperature, operating state, and of course, operating mode. Unliked centralized VAV (variable air volume) system, the temperature in VRV and VRF air cooling systems can be modified in each individual room.


  • With a VRV and VRF system, the temperature of the room will be automatic determined by the system itself. Air con connected to such systems will then provide suitable temperatures to give the comfortable environment.
  • VRV and VRF systems will be most useful in places experienced constant change in temperatures and weather conditions. While there are controls to adjust temperatures, it does not need to be frequently changed by users.
  • As the compressor’s output is based on the outside atmosphere, it is considered to be very energy and cost efficient. With its automatic feature and control option that adjust power consumption, you’ll be able to save on your electric bill.

With its energy and cost efficiency, VRV and VRF systems are most used in commercial and industrial areas.

Looking to installed Daikin commercial VRV system or a VRF system at your office? Letscool Aircon Servicing Singapore offers the best commercial and industrial aircon servicing in the country. From commercial installations such as a Daikin’s ceiling cassette aircon or aircon repair work, our team of dedicate technicians is highly equipped with skills to carry out any kind of aircon service.

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