VRF technology uses advanced controls and sensors to continuously monitor the cooling or heating demand of each indoor unit. Based on this demand, the system adjusts the flow of refrigerant to each unit, ensuring that only the required amount of refrigerant is supplied. This is achieved through the use of inverter-driven compressors, which can modulate their speed to match the changing load conditions. This approach enables VRF systems to provide precise temperature control, improved efficiency, and reduced energy waste.