Split systems have equipment on the outside and inside of the home. The key difference is the equipment that blows the air is located inside the home or garage.
Split System
Self contained systems have equipment only on the outside of the home. This system blows air directly from the unit into a duct from the outside of your home.
Packaged
Ductless systems have equipment on the outside and inside of the home. The key difference is the system does not use ductwork to distribute the air.