What is a Package Air Conditioner? A package air conditioner is a comprehensive air conditioning system that houses all essential components, such as the compressor, evaporator coil, and fan, within a single unit. Typically installed outdoors—either on the ground or on rooftops—this system is linked to the building via ductwork. While package units are similar to ducted units, the key difference lies in the outdoor unit, which contains only the condenser coil and fan motors. Package units are often classified as commercial systems and are designed to operate under challenging environmental conditions. These systems are connected to ductwork, ensuring chilled air is distributed throughout various areas, with the temperature being centrally controlled from a single point. Package units are available with capacities ranging from 5.0 tons to 11.0 tons