Humidaire Company, Inc

Phone: 215-467-4646 Fax: 215-467-1667
2701 East Tioga Street
Philadelphia, PA 19134

Helpful photos to identify your blower wheel
Forward curve Blower Wheel
Clockwise Direction CW

 Blower Wheel forward curve Clockwise for ventalation
Forward Curve Blower wheel
Counter Clockwise CCW

 Wheel for HVAC systems
Forward Curved
Clockwise Wheels ( CW )
direction detrimined by
View from closed End
Reinforced Blower Wheels
BackWard Curve
Blower Wheel
Commonly used for roof exhaust fans
CCW Counter Clockwise view from closed End
Backward incline wheel CCW
Clockwise Version
Backward Curved

Clamp Lock Hub
Blower Wheels with Clamp Lock hub
 Hub used often on very large wheels
Blower Wheel