Greenheck has released a new instructional video titled “How to Change Blade Pitch on an AX Fan.” The video, which can be viewed on Greenheck’s website, demonstrates how to adjust vane axial fan blade pitch angles to increase or decrease airflow for optimal fan performance.

Greenheck says its series of “How To” videos are designed to help contractors and facility managers handle common maintenance issues specific to HVAC equipment. To view the video, visit and click on the Library link found on the home page navigation bar. Then click on videos.