Air handling units (AHUs) are critical components of office buildings, responsible for regulating and circulating air to ensure a healthy and comfortable indoor environment. AHUs play a crucial role in maintaining indoor air quality (IAQ) and optimizing energy efficiency in office buildings.

AHUs are typically located in mechanical rooms or on rooftops, and consist of fans, filters, dampers, heating and cooling coils, and controls. They draw in outside air, filter it to remove pollutants, and condition it to the desired temperature and humidity before supplying it to different areas within the building.

One of the main functions of AHUs in office buildings is to improve IAQ. Air filters in AHUs capture dust, pollen, allergens, and other airborne particles, preventing them from entering the office spaces. This helps create a healthier environment for office workers, reducing the risk of respiratory issues and allergies.

In addition, AHUs are responsible for providing thermal comfort to office occupants. They can cool or heat the air as needed, and distribute it evenly throughout the building. Advanced AHUs are equipped with variable air volume (VAV) controls, which adjust the airflow based on demand, ensuring that each area within the office building receives the appropriate amount of conditioned air for optimal comfort. This not only enhances occupant satisfaction but also helps save energy by avoiding unnecessary conditioning of air in unoccupied areas.