This is an Aux branded 1.0 horsepower (HP) inverter air conditioner that uses R32 refrigerant. The 'Inverter' technology suggests it is energy efficient, adjusting cooling output based on the room's temperature. A key selling point is the 5-year warranty specifically on the compressor, indicating reliability and manufacturer confidence in this core component. R32 refrigerant is generally considered more environmentally friendly than some older refrigerants.