How to Calculate the Size of a Split System Air Conditioning Unit
Split, or mini-split, air conditioners are ductless systems that use both an outdoor air compressor and an indoor handling unit. A conduit connects the indoor and outdoor units. They are popularly used in old houses that do not have "ducted" systems already installed. Mini-split systems are also practical for room additions, that are not connected to ducts, and small apartment rooms. These conditioning systems are measured in BTUs (British Thermal Units). Determine the correct amount of BTUs that your system should have to properly cool your rooms.