20.8 SEER rating Energy Star Certified: saves you a considerable amount for heating and cooling, Designed to cool and heat rooms up to 750 sq. ft. with variable speed inverter ensuring this is achieved quietly and efficiently, Low Temp operation: operates at temperatures as low as 5F/-15C making it ideal for scenarios that requires all year round cooling while the Heat Pump makes it a 4 season solution, Refrigerant Leak detection: unit will automatically shut down in the event of a leakage, Comes pre-charged with R410-A refrigerant.