LG Electronics LW1215HR 12000 BTU 230-volt Slide in-Out Chassis Air Conditioner with 11200 BTU Supplemental Heat Function Air conditioner/supplemental heater with slide-out chassis for either window or wall installation (Window mounting kit included) 12,000 BTU cooling / 11,200 BTU supplemental heating (Special 230V electrical outlet required - unit will not work with a standard 115V outlet) Supplemental heat capability provides an additional heat source to your main heat source when outdoor temperatures are above 45 Degree For a room up to 550 sq. ft. with multi-speed electronic controls, dehumidification up to 3.3 pints per hour, and full-function remote control Thermistor thermostat, Energy Saver mode, 24-hr. on/off timer, 4-way air deflection and easy-clean mesh filter with "clean filter" alert. Air Flow (CFM) 265