An air handling unit (AHU) is a critical component of any air conditioning system. It is responsible for controlling the air temperature, humidity, and air flow in a space. The AHU consists of several components that work together to achieve the desired result. The primary components of an AHU include a fan, filter, coil, and dampers. The fan is responsible for drawing air into the unit and pushing it through the filter. The filter is responsible for removing dust, pollen, and other airborne particles from the air. The coil is responsible for cooling or heating the air, depending on the desired temperature. The dampers are responsible for controlling the air flow and direction. All of these components work together to provide a comfortable environment for the occupants of the space.