A wall-mounted air conditioner is a type of air conditioning unit that is installed on or mounted on the wall, typically higher up in a room. It's designed to cool or heat a specific area, making it ideal for individual rooms or smaller spaces.

A ducted air conditioning system is a type of central air conditioning designed to cool or heat large spaces or entire buildings. Unlike wall-mounted or window units, a ducted system uses a network of ducts (rigid or flexible) to distribute cooled or heated air throughout multiple rooms or zones. These systems are commonly used in homes, offices, commercial buildings, and larger residential properties.

These systems are often mounted above wardrobes, cupboards, or hidden within ceiling spaces, with the conditioned air delivered through discreet linear grilles that blend seamlessly into the room's design. Most bulkhead air conditioning systems are equipped with their own individual controllers within the room they are serving.