A Centrifugal Blower is an air moving device that uses an impeller to pull air into a tube like structure and release it at a 90o angle. The impeller is a set of blades inside the blower that rotates at a high rate to pressurize and move air. The air blower is made up of a fan wheel, housing and a drive mechanism and at times dampers for both the inlet and outlet. The fan wheel is the key to the function, the wheel is made from a series of blades which are mounted to a central hub. Centrifugal Blower is very effective.