Envirofan Links
  Specs & Cut Sheets
   Installation Instructions
   Product Photos
General Links
   About Us
   Contact Us
   Find a Distributor
   Ordering Instructions
   Retail Price List
 


Northwest Envirofan

A division of

Northwest Environmental Systems, Inc.

 
Toll-Free: 800-236-7080
Phone: 920-235-7808
Fax: 920-235-3049
Email:
info@envirofan.com



Airflow Patterns Utilizing Straight vs Curved Blades

All blade configurations move a similar amount of air, however by utilizing curved or straight blades together with either an up or down blowing mode you can create a different air flow pattern to best suit your needs. 

 

See the four diagrams below for details.

 

   

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.

 

Northwest Envirofan. Copyright © 2000-2009. All Rights Reserved.