This six lesson course begins with coverage of airflow basics, including how air moves, types of airflow, and pressure relationships. Compares and contrasts various types of fans and fan motors. Examines types of ducts, fittings, connections, insulation, and terminal devices. Covers various methods of cleaning and filtering air, as well as balancing and troubleshooting the air-handling system. Concludes with a lesson on indoor air quality and sick building syndrome.