Split HVAC systems, which consist of an outdoor unit and one or more indoor units, offer several advantages, including flexibility, quiet operation, and ease of installation. They also provide zone control, which allows for more precise temperature control and increased energy efficiency. However, split systems can be more expensive than other types of HVAC systems, and they require more space for the indoor units. Additionally, the refrigerant lines that connect the indoor and outdoor units can be prone to leaks and other issues.