VRF (Variable Refrigerant Flow) systems, also known as VRV (Variable Refrigerant Volume) systems, are advanced HVAC (Heating, Ventilation, and Air Conditioning) systems that provide precise control over the amount of refrigerant flow to multiple indoor units. These systems use a single outdoor condensing unit that connects to multiple indoor units installed throughout a building. VRF systems utilize variable-speed compressors and sophisticated control algorithms to adjust the flow of refrigerant according to the cooling or heating demands of each zone or room, thereby optimizing energy efficiency.