What purposes do the duct systems serve in an HVAC system?

What purposes do the duct systems serve in an HVAC system?

• A. They only circulate air within rooms.
• B. They carry warm air during winter, cool air during the summer, and ventilate the space to provide better air quality.
• C. They generate heated air without a furnace.
• D. They replace the need for a dedicated air handler.

Answer: (B)

Duct systems act as the distribution network for conditioned air. They move heated air from the furnace or heat source during winter and cooled air from the air conditioner during summer to the rooms that need it, producing even temperatures throughout the space. They also form the path that returns air to the system, allowing filtration and, with any ventilation provisions, improved indoor air quality. Heat isn’t generated by the ducts themselves; the furnace or air conditioner does that work. Ducts also can’t replace an air handler—they simply transport the conditioned air that the conditioning equipment produces.

Duct systems act as the distribution network for conditioned air. They move heated air from the furnace or heat source during winter and cooled air from the air conditioner during summer to the rooms that need it, producing even temperatures throughout the space. They also form the path that returns air to the system, allowing filtration and, with any ventilation provisions, improved indoor air quality. Heat isn’t generated by the ducts themselves; the furnace or air conditioner does that work. Ducts also can’t replace an air handler—they simply transport the conditioned air that the conditioning equipment produces.