The Panasonic CUXE9PKUA is a multi zone condenser and requires a Panasonic multi zone air handler to operate. Panasonic's Ductless Split Air Conditioner products offer wide versatility in solving your cooling for a single room. The Indoor unit evaporator is mounted inside the room, enclosed in a handsome space saving cabinet. It is connected to the outdoor unit condenser via refrigerant lines interunit wiring through a 31/2 opening in the wall. Since no ductwork is required, installation is simple, fast and efficient. The indoor unit has been uniquely designed to provide Whisper Quiet operation while delivering comfort throughout the room's. Panasonic Ductless Split Systems bring together sleek styling in wall, duct or ceiling mounted systems, with whisper quiet operations, quality and reliability you can count on.