Shop for Heating, Venting & Cooling at The Home Depot. The LG Electronics 9,500 BTU Casement Window Air Conditioner with Remote, with its 4-way air direction and multiple fan and cooling settings, combine to provide ideal comfort. This 9,500 BTU air conditioner can cool approximately 450 sq. ft. and features a handy remote for portable control over temperature settings. Digital controls feature a 12-hour timer that allows you to create a customize cooling schedule for greater energy savings. It has a washable filter to minimize the need for replacements and comes with an installation kit.