There are two primary types of fans. The most common type is an axial-flow fan. These are economical and great for many applications like bathrooms. Centrifugal fans, however, can offer many benefits compared to axial-flow fans. They provide better pressure generation and more efficient ventilation. This can make centrifugal fans ideal options where the air needs to go through an extended duct system, quieter operation is important, or the air circulation needs to be applied to a greater area.