What type of fan is most commonly used in ducted air-conditioning systems?

Correct Answer: Option B — Centrifugal fan

Centrifugal fans are standard for ducted HVAC systems because they efficiently handle the static pressure resistance created by ductwork, filters, and coils. Unlike axial fans, which move air parallel to the shaft, centrifugal fans use centrifugal force to increase air pressure, making them ideal for complex marine ventilation distribution networks.