M4AH4 Convertible Air Handler with All-Aluminum Coil System Features Ameristar air handlers are adaptable to both 13 and 14 SEER models 1.5 - 5 ton models available All-aluminum blower motors achieve higher AHRI ratings Painted, galvanized steel cabinets resist rust Ameristar air handlers offer multiple airflow designs for convertibility: Vertical upflow/downflow; Horizontal left or right Auxiliary heaters available in 5 kW-20 kW Dual drainage spouts offer flexibility in installation options Removable front panel and blower and coil assemblies that slide out allow easy access for maintenance and troubleshooting M4HP4 Heat Pump The M4HP40 is fully charged from the factory. This unit is designed to operate at outdoor ambient temperatures as high as 115F. Cooling capacities are matched with air handlers and furnace coils that are AHRI certified. The unit is certified to ETL. Exterior is designed for outdoor application. System Features Ameristar units are available in 14 SEER (R410A only) models 1.5 - 5 ton models available Painted, galvanized steel cabinets resist rust and stand up to weather The compact design and small footprint are ideal for homeowners with limited yard space Units operate quietly, with a maximum sound level of 76 decibels 24V low voltage control provides added safety