What is the main purpose of an air handling unit (AHU)?

An air handling unit (AHU) serves a fundamental role in heating, ventilation, and air conditioning systems by circulating and conditioning air within a building. AHUs are responsible for drawing in air, which is then treated by various processes such as filtration, heating, cooling, and humidity control, before being distributed throughout the space.

The ability of an AHU to condition air includes adjusting temperature and humidity to ensure the indoor environment remains comfortable and healthful. This is crucial for maintaining air quality and comfort levels in enclosed spaces, which can vary based on occupancy, external weather conditions, and specific building requirements.

While filtering dust and debris, regulating humidity levels, and cooling refrigerant are important components of the overall HVAC process, they are specific functions or aspects of what the AHU does as part of its broader role in ensuring effective air movement and overall comfort in a building. Thus, the central purpose of the AHU encapsulates the entire process of circulating and conditioning air.