A mini split is a ductless heating and cooling system made up of an outdoor unit and one or more indoor units. The two are connected by small refrigerant lines, allowing the system to transfer heat directly between indoors and outdoors without ductwork.

Mini splits offer room-by-room temperature control, quiet operation, and flexible installation. Without ducts, they avoid the energy losses that can occur in ducted systems, which the U.S. Department of Energy notes can be more than 30% of energy used for heating or cooling.

With proper maintenance, many mini split systems can last over a decade. Lifespan varies depending on the system, usage, environment, and care.

Yes, many mini split systems are heat pumps, which can provide heating in colder weather. The specific temperature range depends on the model, some are designed to work efficiently even in freezing conditions.

No. Mini splits use small refrigerant lines instead of ducts, which makes them ideal for homes without existing duct systems or for adding heating and cooling to specific areas.