I live in a "small" house, under 450 square feet. Unit is powerful enough to easily cool living room, kitchen, bedroom, bath and hallways with the setting usually no lower than 74 degrees even on the hottest days. The energy saving feature is wonderful. The unit is however somewhat noisy, but that could also be because of the size of my place. My friend who also lives in one of these small houses installed one as well and is equally pleased with the unit. Would highly recommend to anyone looking for an attractive, efficient, and well-constructed air conditioner.