A split air conditioner is a type of cooling system that consists of two main parts: an indoor unit and an outdoor unit. The indoor unit is installed inside the room, where it blows cool air, while the outdoor unit is placed outside the building, where it releases heat. This design allows for efficient cooling without the need for bulky ductwork. Split air conditioners are popular for both residential and commercial use due to their quiet operation and energy efficiency. They come in various sizes and capacities, making it easy to find a model that suits different room sizes and cooling needs.