Mini split air conditioners are ductless heating and cooling systems that allow you to control the temperatures in individual rooms or spaces. They consist of an outdoor compressor/condenser and one or more indoor air handling units connected by a conduit that houses the power cable, refrigerant tubing, suction tubing, and a condensate drain. Mini splits are versatile and can be installed in various locations, making them ideal for homes without existing ductwork or for room-specific temperature control.