Description: The Air Equipment LLC YouTube channel offers informational videos about various commercial ventilation products and services. The five videos titled “Basics of Fans & Blowers” are intended for mechanical engineers and other HVAC system designers. The videos explore the various types of air-moving devices used in commercial projects, the basics of fan curves and the Fan Laws, belt-drive vs. direct-drive fans, and the new EC motor technology. The first video discusses commercial fans and blowers, and looks at two types of fan impellers, the axial impeller and the mixed-flow impeller. Various models of fans that use these impellers are shown and explained. For more information about Air Equipment LLC visit www.airequipmentllc.com .