In an HVAC system, what components are primarily responsible for moving air through the ductwork?

In an HVAC system, what components are primarily responsible for moving air through the ductwork?

• A. Filters
• B. Thermostats
• C. Duct dampers
• D. Blower and fans

Answer: (D)

Air movement through the ductwork is produced by the blower and fans. These components convert electrical energy into kinetic energy and create the pressure difference that pushes air from the return through the ducts and out into the rooms. The system relies on the blower to generate the flow, while thermostats tell the system when to run the blower and dampers can adjust how much air goes to different zones. Filters only add resistance and clean air; they don’t move it. Duct dampers regulate or balance airflow but don’t create the actual movement.

Air movement through the ductwork is produced by the blower and fans. These components convert electrical energy into kinetic energy and create the pressure difference that pushes air from the return through the ducts and out into the rooms. The system relies on the blower to generate the flow, while thermostats tell the system when to run the blower and dampers can adjust how much air goes to different zones. Filters only add resistance and clean air; they don’t move it. Duct dampers regulate or balance airflow but don’t create the actual movement.