Easy installation with no construction required; No need to drill holes in the wall and no space to put an outdoor unit. Easy to move and move. Can be installed in windows from 30.7 - 78.7 inches (777 - 2005 mm); Negative ions will refresh the air in your room. Front panel can be removed for cleaning. Uses eco-friendly R410a refrigerant. The "sleep driving function" prevents overcooling Easy-to-read LCD remote control