I live in Tucson, Arizona, with summer temperatures 107°- 112°. Mounted in my bedroom window, I sleep with blanket at night, and at least a sheet over me, if I take a nap during the peak daylight temperature. Many people don't realize how much money they save by having a higher energy efficiency A/C. Usually a dramatic savings. This LG model delivers coal air, and great savings. Would recommend to anyone looking for this size(BTUs).