The answer to 'difference between central air and mini split' is that central air conditioning systems are a single, large unit that cools an entire home, while mini-split systems are smaller, ductless units that cool individual rooms or zones. Central air systems require ductwork throughout the home, while mini-splits have an outdoor compressor/condenser unit and one or more indoor air-handling units connected by refrigerant lines.
Mini-splits are generally more energy-efficient and flexible, allowing you to cool only the rooms you're using. They're also easier to install in homes without existing ductwork. However, central air systems can be more cost-effective for larger homes and provide whole-home cooling. The best option depends on the size and layout of your home, as well as your cooling needs and budget.