A small split AC unit is a type of air conditioning system that is designed to cool a single room or small area. Unlike a central air conditioning system, which cools an entire building, a small split AC unit is designed to provide cooling to a single room or area. It consists of two parts: an outdoor condenser unit and an indoor air handler. The outdoor condenser unit is responsible for compressing and cooling the refrigerant, while the indoor air handler is responsible for circulating the cooled air throughout the room or area. The two parts are connected by copper tubing and electrical wiring, allowing the refrigerant to be circulated between the two. Small split AC units are ideal for cooling small areas, such as bedrooms, offices, or other small spaces. They are also energy efficient, as they are designed to cool only the area they are installed in, rather than an entire building.