Why Would I Need A Multi Split Air Conditioning System?
Multi Split System is designed mainly for small to medium commercial applications where the installation of duct work was either too expensive, or aesthetically unacceptable. The small-bore refrigerant piping, which connects the indoor and outdoor units requires much lower space and is easier to install than the metal ducting. Each indoor unit has its own set of refrigerant pipe work connecting it to the outdoor unit.
The fact that one large condenser can be connected to multiple evaporators within the building reduces and/or eliminates the need for duct work installation completely.
Multi splits are suitable for single thermal zone (defined below) applications with very similar heat gains/losses.