Thermocore T5E18S-H224-Cassette Ductless Mini Split Ceiling Cassette - 24000 BTU Inverter Cooling Capacity along with a 24,000 BTU Heat Pump, this 2 TON Energy Star Ductless Split can cool or heat an area up to 1200 ft². Advanced INVERTER DC Technology provides both energy efficient operation and low ambient operation start-ups. Additional features include auto-diagnostic functions and sleep mode / 24 hour timer. Comes pre-charged with eco-friendly R410A.