R-410A Chlorine-Free Refrigerant, High-Efficiency Scroll Compressor, Liquid Refrigerant Return Protection, Factory-Installed, Bi-Flow Liquid Line Filter Drier, Service Valves with Sweat Connections and Easy-Access Gauge Ports, Copper Tube/Enhanced Aluminum Fin Coil, Reliable Time-Initiated, Temperature-Terminated Defrost Control, Contactor With Lug Connection, Ground Lug Connection