Model YLAA – scroll compressor Refrigerant: HFC-410A Standard Features: shell-and-tube evaporator, microchannel Condenser, BAS communications, high-ambient kit to 125°F Available Options: heat-recovery capability, remote-evaporator option, hot-gas bypass, factory-mounted hydronic-pump kit, low-ambient kit to 0°F, dual-point power, conventional tube-and-fin coils