Fan Engineering Guides

Video-led explanations of fan operation, selection, testing and system behavior for HVAC and equipment engineers.

Aluminum-vs-Steel-vs-Composite
By longwell / August 19, 2026 / Fan Engineering Guides

Fan Impeller Material Selection: Aluminum, Steel, or Composite?

Aluminum, steel and composite are broad material families—not complete...

Read More »
How-to-Replace-Fan-Motor-Beari
By longwell / August 18, 2026 / Fan Engineering Guides

How to Replace Fan Motor Bearings?

Bearing replacement is not the first answer to every noisy fan motor. ...

Read More »
Plug Fan vs Housed Centrifugal Fan: Compare the Installed Boundary
By longwell / May 28, 2026 / Fan Engineering Guides

Plug Fan vs Housed Centrifugal Fan: Compare the Installed Boundary

Compare plug and housed centrifugal fans at the same airflow-pressure ...

Read More »
Understanding Centrifugal Fan Curves: How to Read Performance Charts
By longwell / March 10, 2026 / Fan Engineering Guides

Understanding Centrifugal Fan Curves: How to Read Performance Charts

A centrifugal fan curve is a map of measured operating points, not a p...

Read More »
Core Aerodynamic Performance Analysis: Technical Selection Guide for Forward vs. Backward Centrifugal Fans
By longwell / March 7, 2026 / Fan Engineering Guides

Core Aerodynamic Performance Analysis: Technical Selection Guide for Forward vs. Backward Centrifugal Fans

Forward-curved or backward-curved? Neither is the automatic winner. St...

Read More »