The Goodman AMST48CU1300 is a 4 Ton multi-speed air handler designed for multi-position installation. It features a factory-installed TXV and is optimized for R-32 refrigerant. Suitable for residential HVAC systems requiring flexibility, energy efficiency, and reliable performance. Model: AMST48CU1300 Type: Multi-Position Air Handler Capacity: 48,000 BTU (4 Ton) Motor: 9-Speed ECM Motor Voltage: 208–230V / 1-Phase / 60Hz Refrigerant: R-32 TXV: Factory-Installed Coil: All-Aluminum Evaporator Cabinet: SmartFrame™ Insulated Steel Installation: Upflow, Downflow, Horizontal .