A split DX system is a type of heating and cooling system that uses two separate units to provide optimal comfort in a home or office. The first unit is an outdoor condenser, which is responsible for cooling the air. The second unit is an indoor air handler, which is responsible for heating the air. The two units are connected by a network of ducts, which allow the cooled or heated air to be distributed throughout the building. Split DX systems are energy efficient and cost effective, making them a popular choice for both residential and commercial applications. They are also easy to install and maintain, making them a great option for those looking to upgrade their existing heating and cooling system.