A split unit AC heat is a type of air conditioning system that is composed of two main 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 fan. The two units are connected by refrigerant lines that allow the refrigerant to flow between them. The outdoor unit is responsible for compressing the refrigerant and releasing the heat outside, while the indoor unit is responsible for evaporating the refrigerant and releasing the cooled air inside. Split unit AC heat systems are an efficient and cost-effective way to cool and heat a home or office. They are especially beneficial in climates where both cooling and heating are needed. Split unit AC heat systems are also quieter than other types of air conditioning systems, making them ideal for residential use.