Rated at 9,000, 12,000, and 15,000 BTU, respectively, Halcyon 9RLS3, 12RLS3, and 15RLS3 provide up to 33 SEER and HSPF up to 14.2, making entire line ENERGY STAR® Most Efficient. All inverter wall-mount systems are available as split system heat pumps, offering full heating capacity down to -5°F ambient and cooling operation down to 14°F. Standard features include wireless remote control, ion deodorizing filters, sleep timer, 24-hour timer, dry mode, 4-way auto louver, and auto mode.