British Thermal Unit (BTU) is a unit of measurement that determines how much cold/hot air comes out of each unit. The more air comes out, the more space it needs for the air to circulate. The number of BTU's needed is usually calculated by square footage and may vary depending on the year/model of the mini split air conditioner. By selecting the proper model for your heating and cooling area you can ensure that occupants receive comfort all year round.
100 to 200 sq ft (usually a bedroom) - 9000 BTU
200 to 400 sq ft (usually a master bedroom) - 12000 BTU
400 to 700 sq ft (usually a kitchen + living room) 18000 BTU
700 to 1000 sq ft (usually for large living rooms or commercial applications) - 24000 BTU