Air Handling Units (AHUs) are essential HVAC systems that condition and distribute air throughout a building. They filter, heat, cool, humidify, or dehumidify the air before circulating it through ductwork. AHUs come in two types: Chilled Water AHUs, which connect to a central chiller for cooling, and DX (Direct Expansion) AHUs, which have an integrated condensing unit for cooling. Both types feature components like fans, coils, filters, and heat recovery systems to ensure optimal indoor air quality and thermal comfort. Commonly used in commercial buildings, hospitals, industrial facilities, and data centers, AHUs provide efficient air management and temperature control.