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Centrifugal and EC fans differ in design and efficiency, with EC fans using brushless DC motors for improved performance.

Centrifugal fans come in various types with different blade designs, airflow capabilities, and applications.

A downblast exhaust fan is a ventilation device that expels air downward, ideal for removing heat, moisture, and fumes.

Extractor and exhaust fans remove air from a room, but differ in placement, power, and specific use cases.

Cross flow and axial fans differ in airflow direction, with cross flow moving air perpendicular to the fan axis.

Learn the basics of interpreting centrifugal fan performance curves to properly select and apply fans in HVAC systems.