Air handling units (AHUs) are a critical part of HVAC systems, playing a crucial role in regulating indoor air quality and temperature.

The primary function of an AHU is to circulate and filter the air within a building. AHUs typically contain a blower, which pulls air from the building through return ducts and pushes it through a series of filters to remove dust, pollen, and other pollutants. The filtered air is then circulated back into the building through supply ducts.

In addition to filtering the air, AHUs can also help to regulate temperature and humidity levels within a building. They contain heating and cooling coils that can be used to warm or cool the air as needed. Some AHUs also include humidifiers or dehumidifiers to control the level of moisture in the air.

AHUs can be configured in a variety of ways to meet the specific needs of a building. For example, they can be designed to deliver conditioned air to specific zones or rooms within a building, or to provide ventilation for the entire building. Multiple AHUs can also be used in tandem to create a more efficient and effective HVAC system.

There are several key components of an AHU that enable it to perform its functions. In addition to the blower, heating and cooling coils, and filters, AHUs also typically include dampers to regulate the flow of air and control temperature, and sensors to monitor temperature, humidity, and air quality.

In conclusion, air handling units are an essential part of HVAC systems, responsible for regulating indoor air quality, temperature, and humidity. By understanding the functions and components of AHUs, building owners and operators can ensure that their HVAC systems are operating efficiently and effectively.