The definition of a multi split AC unit is one that is capable of cooling multiple rooms or areas in a building. It is a type of air conditioner that is ideal for larger buildings, homes, or offices that require more than one climate zone. Unlike a traditional single split AC unit, a multi split AC unit provides the ability to cool multiple areas from a single outdoor unit. This reduces the number of outdoor units needed and can be more efficient in terms of energy usage. A multi split AC unit typically consists of one outdoor unit connected to several indoor units, each of which are capable of providing a different temperature for different rooms or areas. The outdoor unit contains a compressor, condenser, and fan and is connected to the indoor units via refrigerant piping. The indoor units can be either wall-mounted or ceiling-mounted and provide the air conditioning for each room or area. Each indoor unit also has its own evaporator, fan, and controller. The controller is used to adjust the temperature