Ductless, mini split systems are quite often the best choice for numerous applications in residential, commercial and institutional buildings. These systems can be used for renovations, room additions and even new construction when the advantages of energy-efficient zone cooling are desired. Some ideal applications include: homes, multifamily housing, churches, nursing homes, grocery stores, restaurants, motels, school classrooms and perimeter cooling for office buildings.
Much like central systems, the mini split systems have two main components: an outdoor condensing unit and indoor fan coil. Also included is a conduit, which houses the power supply, refrigerant tubing, suction tubing and a condensate drain, linking the outdoor and indoor units.
Easy Installation
Simple installation means you can have the unit up and running in just a few short hours.
No Ductwork
 Avoids the energy losses associated with ductwork of central forced air systems. Duct losses can account for more than 30% of energy consumption for space conditioning.
Ultra-quiet Operation  
Mini splits are designed to be much quieter than window units. You will not hear an annoying rush of air or compressor noise.
Simple Controls
Settings are constantly maintained and monitored by simple controls which often include a wireless remote control.
Security
Split systems keep your home or office safe because they only need a three inch hole to connect the units, whereas, window units can provide an easy entrance for intruders.
Interior Design Options        
The indoor fan coil can be suspended from a ceiling, mounted flush into a drop ceiling, or mounted on a wall.

 As a rule of thumb: (remember, these figures are simple approximations)
 
Commercial applications (shops, offices, etc.)*: 400 sq. ft. per 12,000 Btuh
Computer rooms and telephone servers*: 250 sq. ft. per 12,000 Btuh
Residential applications*: 600 sq. ft. per 12,000 Btuh
 
*These figures are not a substitute for performing a Manual J or other accurate heat load calculation