Ductless mini splits
Ductless systems connect an outdoor unit with an indoor unit to heat or cool one specific zone of a home without the use of duct work. It allows for flexibility in where you deliver heating and cooling in your home without the use of duct work. An outdoor unit is placed outside your home--often at ground level, but not always--and is connected to an indoor unit by small cables and a refrigerant line through a hole in the wall. The indoor unit is typically mounted high on the wall of the room and can be pre-set to run automatically or be adjusted by a remote control.