RV stands for Variable Refrigerant Volume, also known in the wider industry as variable refrigerant flow (VRF). At the heart is Daikin’s renowned heat pump and inverter technology. A VRVVRF system is still the only commercial system that continuously adjusts the refrigerant volume within the system to match exactly the heating or cooling requirement in each area, for optimum comfort and maximum energy efficiency.VRV & VRF air conditioning system are basically large multi-split systems where a number of indoor units are connected to the outdoor unit.