Industrial Blowers differ from Axial Flow Fans in the way they move the air. An Industrial Blower or Centrifugal Blower typically has one of seven types of wheels that draws the air into the inlet of the blower housing while an Axial Flow Fan or Industrial Axial Fan uses a propeller to draw the air into it. The air in and industrial or centrifugal blower is drawn through the wheel, and discharged at 90 degrees out through the discharge of the housing. An axial flow fan discharges it in the same axial direction. Fans are air moving devices with propellers while blowers are those with a wheel.