A split system air conditioner is a type of air conditioning system that is composed of two separate units, an indoor unit and an outdoor unit. The indoor unit is typically installed in the living space, while the outdoor unit is installed outside the home. The two units are connected by a refrigerant line, which carries the coolant between the two units. The indoor unit contains the evaporator coil, which absorbs heat from the air in the living space, and the fan, which circulates the cooled air. The outdoor unit contains the condenser coil, which releases the heat absorbed by the evaporator coil, and the compressor, which pumps the refrigerant between the two units. The split system air conditioner is an efficient and cost-effective way to cool a home, as it does not require ductwork or a large space for installation. Additionally, it can be used to heat a home in the winter, as the evaporator coil can be used to absorb heat from the air and the condenser coil can be used to release the heat.