25,000 BTU air conditioner cools approximately 1,500 sq. ft. Energy Star compliant Energy Efficiency Rating (EER) of 9. 8 Environmentally friendly R410A refrigerant Variable electronic temperature control 17C - 30C (62. 6F - 86F) 4 way air direction 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 Quiet operation (60 decibels) Minimum window height required 19 8/16" (49. 5 cm) Expandable window installation kit accommodates windows from 78. 7 cm to 106. 7 cm (31-in. to 42-in. )