Operational scheme of Multi-split systems are similar to Split systems, but in this case one external unit is connected to more than one internal unit. In different Multi-split systems different types of internal blocks can be combined – walls, cassette, floor etc. In addition, it is usually possible to assemble and connect internal blocks gradually. Every internal air conditioning unit is equipped with a remote control and can be operated individually. The main advantage of Multi-split systems is reduction of external units, which allows maintaining architectural splendor of the buildings.