A ductless air conditioning system has three main components: an indoor air handling unit, an outdoor condensing unit and a remote controller. The indoor and outdoor units are easily connected by refrigerant lines running through a small three-inch opening in the wall or ceiling. The outdoor unit cycles the refrigerant through the lines to and from the indoor unit, where the air is conditioned and distributed into the space. Installation is as simple as mounting the indoor and outdoor units, connecting the refrigerant lines, and making a few electrical connections. Your home can now be more comfortable than ever. You don’t need ductwork or a window space. The sleek wall-mounted indoor unit mounts discreetly high on the wall. The outdoor unit is slim and requires minimal ground space or service clearance.