Indoor Air Handler

The indoor air handler is the unit mounted on your wall inside the room. It's the part of the mini split you actually see and feel — it blows conditioned air into the space and pulls room air back in to be cooled or heated. Most are slim, quiet, and come with a remote control. Each room gets its own air handler, which is what makes zone cooling possible. They connect to the outdoor unit through a small set of refrigerant lines that run through a small hole in the wall.