Ducted indoor units are installed in a confined space and ducts run through the ceiling leading to air outlets in your room. Air is allowed into the room through vents on the ceiling or on the wall. Whatever the shape of the room, ducted units ensure uniform temperatures throughout. These units are ideal for your home, where very low sound levels are wanted. It allows you to heat your home without having to install the indoor units on your wall, making your home look neat and tidy.