In Mini Split AC ductless systems an outdoor unit connects with an indoor unit to heat or cool one specific zone of a home without the use of ductwork
Mini-split versus multi-split
The mini-split AC ductless system controls one room or zone by connecting one outdoor unit to one indoor unit. A multi-split ductless system can connect one outdoor unit to up to five indoor units—depending on the indoor and outdoor model—letting you control the heating and cooling in several zones or rooms independently of each other.
Where ductless is needed
A ductless system is a great solution for homes without a central heating and cooling system or when a room is added onto a house or an attic is converted to living space. Instead of extending the home’s existing ductwork, a ductless system can provide efficient heating and cooling at a lower operational cost.