A split air conditioner is a type of air conditioning system that consists of two main parts: an indoor unit and an outdoor unit. The indoor unit is typically mounted on a wall inside the room or space to be cooled, while the outdoor unit is placed outside the building.

The indoor unit contains the evaporator coil, which cools and dehumidifies the air, as well as a fan that circulates the cool air throughout the room. The unit also contains a filter that removes dust and other particles from the air, improving air quality.

The outdoor unit houses the compressor, which compresses the refrigerant gas to increase its temperature and pressure, and the condenser coil, which releases the heat absorbed by the refrigerant outside. The two units are connected by refrigerant pipes and electrical wiring.

Split air conditioners are known for their efficiency and quiet operation, as the noisy compressor is located outside the building. They are also highly customizable, with various sizes and types of indoor units available to suit different room sizes and layouts.