What component is responsible for distributing conditioned air throughout a building?

Ductwork plays a crucial role in the HVAC system by serving as the pathway for distributing conditioned air—whether heated or cooled—throughout a building. It is designed to deliver comfortable air to each room, ensuring that every area receives adequate ventilation and temperature control. A well-designed duct system enhances overall efficiency and comfort levels while also helping to maintain air quality.

The heat exchanger, while essential in the process of transferring heat, does not distribute air but rather facilitates the actual heating or cooling of air before it enters the ductwork. The humidifier adds moisture to the air to maintain humidity levels, but it does not handle the actual distribution of air. The compressor is integral to the refrigeration cycle in cooling systems, compressing refrigerant, but it does not transport air itself. Thus, ductwork is the correct choice for the component responsible for the distribution of conditioned air throughout a building.