Star Refrigeration Systems

VRV is a technology that alternates the refrigerant volume in a system to match a building's precise requirements. Only a minimum amount of energy is required for a system to maintain set temperatures, and ensure that it automatically shuts off when no occupants are detected in a room, 
In a VRF system, the refrigerant passes through condenser units to indoor units, cutting down on the need for extensive ductwork and air handlers. The smaller pipes make it a bit easier to retrofit in older buildings than traditional HVAC systems.