Variable Refrigerant Flow (VRF), which is an advanced HVAC technology similar to VRV (Variable Refrigerant Volume) but primarily associated with the brand name by Daikin. VRF systems utilize variable-speed compressors to regulate the flow of refrigerant according to the heating or cooling demands of different zones within a building. This capability allows for precise temperature control and energy efficiency, as the system can adjust the amount of refrigerant sent to each indoor unit based on real-time needs. VRF systems are known for their flexibility in installation, ability to handle simultaneous heating and cooling, quiet operation, and overall energy savings compared to traditional HVAC systems. They are widely used in commercial buildings, hotels, residential complexes, and other applications where efficient climate control and individualized comfort are priorities.