How Many BTUs Do You Need in an Air Conditioning Unit to Cool a 12 Foot by 12 Foot Room?

A 12 foot by 12 foot room will require an air conditioning unit with a cooling capacity of 5,000 British thermal units, or BTUs, according to the Energy Star website. To arrive at this figure, the square footage of a room must first be determined and then the area should be used as reference to determine the ideal BTUs needed.

Apart from determining the floor area of a room, there are other factors that must be considered when trying to figure out the needed BTUs in an air conditioning unit to cool a particular room. These factors include the location of the room in relation to the sunlight, the number of occupants of a room, if the room is a kitchen and the area in the room where the air conditioning unit will be installed.