The Hisense AW0823TW1W Window Air Conditioner with inverter technology, best suited for smaller rooms (350 sq. ft. or less) with 8,000 BTU of cooling power, is packed with various efficient, easy to use features. Hisense inverter technology saves energy and maintains stable temperature at desired level by varying rotation speed of compressor. E-star certified air conditioner can reduce energy consumption, which in turn, helps to save money. With ConnectLife app on your mobile phone, you can turn on/off your air conditioner or adjust the setting wherever, whenever. The maintenance is simple thanks to the washable and removable filter. 2 year warranty on both parts and labor is another reason why you should buy Hisense air conditioner!