air handling unit

Air Handling Units (AHUs) are modular HVAC components that draw air from return ducts or outside intakes, filter it, and then heat or cool it via coils before distributing it through supply ductwork.

Key sections include pre-filters, HEPA or MERV filters, heating and cooling coils (water or refrigerant), fans (plenum or ducted), and mixing boxes with dampers for outdoor/recirculated air ratios.

Integration with Building Management Systems (BMS) enables automatic temperature and humidity control, economizer modes for free cooling, and demand-controlled ventilation based on CO₂ levels. VFD-driven fans optimize energy use.

AHUs support comfort, air quality, and energy efficiency in commercial buildings, cleanrooms, hospitals, and industrial facilities. Regular maintenance—filter changes, coil cleaning, belt inspections—ensures reliable performance.