Ductless mini-split HVAC systems, which consist of a small outdoor unit and one or more indoor units, offer several advantages, including flexibility, ease of installation, and high energy efficiency. They also provide zone control, which allows for more precise temperature control and increased energy efficiency. Additionally, ductless mini-split systems are often quieter and more compact than traditional HVAC systems, making them ideal for smaller buildings or spaces with limited ductwork. However, they can be more expensive than traditional HVAC systems, and may not be suitable for larger buildings or spaces with high heating or cooling loads.