The answer to 'what does mini split do' is a mini-split or ductless air conditioning system is a type of HVAC system that provides heating and cooling without the need for ductwork. It consists of an outdoor compressor/condenser unit and one or more indoor air-handling units, connected by refrigerant lines. These indoor units are typically mounted high on a wall and can provide cooling and heating to individual rooms or zones, allowing for customized climate control.
Mini-splits are highly efficient and flexible, making them a popular choice for homes or buildings without existing ductwork, additions, or rooms that are difficult to climate control with a central system. They allow you to heat or cool specific areas of your home as needed, rather than running the entire system all the time. This can lead to significant energy savings compared to traditional central HVAC systems.