LG 7,500 115V Window-Mounted 3,850 BTU Supplemental Heat Function Air Conditioner, White Energy efficiency Ratio (EER): 11.2 Uses standard 115V electrical outlet 7,500 BTU cooling for rooms up to 320 sq. Ft 3,850 BTU supplemental heating for Approx. 220 sq. Ft 2 cooling speeds/2 heating speeds/2 fan speeds