VRF (Variable Refrigerant Flow) systems are advanced HVAC (Heating, Ventilation and Air Conditioning) systems that provide climate control in various areas of a building. These systems direct refrigerant to various indoor units connected to an outdoor unit (or group of outdoor units). VRF systems use variable speed compressors and dedicated control systems to adjust the refrigerant flow according to the cooling or heating demands of each zone or room, minimizing energy efficiency.