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The Difference Between VRV and VRF Air Conditioning Systems

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(Last Updated On: September 5, 2018)

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

To start off, VRV and VRF air conditioning systems are technically the same. However, Daikin has copyrighted 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 1980s, 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 compared to VRV.

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WHAT EXACTLY ARE VRV AND VRF SYSTEMS?

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 allows lower power consumption.
  • There will be several air handling units connected to the same refrigerant circuit.
  • Allows modular expansion involving huge projects that grow in small stages.

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HOW DOES IT WORK?

The logic behind the operation of VRV and VRF systems largely depends on the manufacturer and is usually not disclosed. However, in such systems, the input will be influenced 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 implemented in order to provide the most suitable temperature for the area while ensuring optimal power consumption.

The VRV and VRF system’s ability to change the temperature according to its surroundings is considered one of its main reasons why its hailed for its efficiency.

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

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

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

The process then automatically repeats 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. Unlike centralized VAV (variable air volume) systems, the temperatures in VRV and VRF air cooling systems can be modified in each individual room.

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BENEFITS

  • With a VRV and VRF system, the temperature of the room will be automatically determined by the system itself. Air conditioners connected to such systems will then provide suitable temperatures to give the comfortable environment.
  • VRV and VRF systems will be most useful in places experiencing 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 features and control options that adjust power consumption, you’ll be able to save on your electric bill.

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

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

 Contact us to speak to our friendly customer service staff. Call us now at +65 6653 2988 or email us at enquiry@dwaircon.com. We operate from Mondays to Sundays (9am – 9pm).

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