An air handling unit design is a type of engineering design that is used to manage the air quality within a building. It is typically composed of a series of components that work together to provide ventilation, heating, cooling, and air filtration. The components of an air handling unit design can include air filters, fans, dampers, coils, and other components. The design of an air handling unit is important for maintaining a comfortable indoor environment, as well as for improving air quality. It is also important for reducing energy costs, as it can help to reduce the amount of energy needed to maintain the desired temperature. An air handling unit design should be tailored to the specific needs of the building, taking into account factors such as the size of the building, the number of occupants, and the climate. It should also be designed to be efficient and cost-effective, while still providing the necessary air quality and temperature control.