These window air conditioners exert between 8,000 and 12,000 BTUs of cooling power. Typically, units of this size cover between 350 and 700 square feet, depending on the conditions in your space. For this estimate, we assume that your room has a traditional 8-foot ceiling height. Oftentimes, factors such as sunlight, the number of room occupants, ceiling height, and the number of heat-generating appliances in a space can reduce this coverage area. With that in mind, these window AC units are best for cooling single rooms, offices, and small- to medium-sized living areas. For help in choosing the right size window air conditioner for your space, feel free to call our product experts at 1-800-934-9194 for a personalized consultation.