A split AC/Heat unit is a type of air conditioning and heating system that consists of two separate components: an outdoor unit and an indoor unit. The outdoor unit contains the compressor, condenser, and expansion valve, while the indoor unit contains the evaporator and blower. The two units are connected by refrigerant lines and are designed to work together to provide cooling and heating for a home or commercial building. The split system is an efficient and cost-effective way to cool and heat a space, as it allows for more precise temperature control and energy savings. The outdoor unit is typically installed outside the building, while the indoor unit is installed inside the building, usually in the ceiling or wall. The two units are connected by a refrigerant line, which carries the refrigerant between the two units. The split system is also more efficient than a single-unit system, as it allows for more precise temperature control and energy savings.