10,000 BTU air conditioner cools approximately 450 sq. ft. Energy Star compliant Energy Efficiency Rating (EER) of 11. 3 Environmentally friendly R410A refrigerant Electronic controls with remote and LED display 4 way air direction Variable electronic temperature control 17C - 30C (62. 6F - 86F) Energy Saver Switch : Cycles the fan on and off after the compressor shuts off Sleep Mode : Prevents the room from becoming too cold at night Auto on/off : Have the unit start or stop to meet your schedule Minimum window height required : 15-8/16" (39. 4 cm) Expandable window installation kit accommodates windows from 23" (58. 4 cm) to 36" (91. 4 cm) wide