VRF (Variable Refrigerant Flow) Variable Refrigerant Flow Systems Air- and Water-Cooled Systems, 2-48 Tons Standard: Compact Footprint, Ultra Long Line Lengths, Leading Efficiency, High & Low Ambient Single Phase Heat Recovery (5 Ton) Extensive Range of Indoor Units Air Handing Unit and Electric Expansion Valve Kits Hydro Kits • Simple Controls, Third Party, Central Full Building Management System