Northwest Environmental Systems, Inc.
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Curved Blades - Downblowing
Curved Blades create a cone or mushroom shaped air delivery for a less direct, less concentrated airflow. Blades are tipped upward.
Air travels to the floor first - then up the sidewalls - then back across the ceiling for recirculation. Air disburses in a cone shaped air delivery before it reaches the floor for a more gentle airflow.
Curved Blades - Upblowing
Curved blades create a less direct, less concentrated airflow. Blades are tipped downward.
Air travels up into the ceiling first, giving less chance for unmonitored fans to create a draft on young birds or animals - then travels down the sidewalls - across the floor - and back up into the fan for recirculation.
Straight Blades - Downblowing
Straight Blades create a cylinder shaped air delivery for a more direct airflow. Blades are straight to aggressively push the warm air down like an air curtain.
Air travels directly to the floor - then up the sidewalls - then back across the ceiling for recirculation.
Straight Blades - Upblowing
Straight Blades create a cylinder shaped air delivery for a more direct airflow. Blades are straight to aggressively push the warm air up into the ceiling.
Air travels directly to the ceiling - then down the sidewalls - across the floor - and then back up into the fan for recirculation.
Note: There is no right or wrong answer as to which configuration will work best for you. It is really more of a personal preference. If you order your fans in the up or downblowing configuration, you can change the direction of the motor rotation if you want to test the difference for yourself.
Click here for directions on changing the wiring configuration for your fan.