Because of the high pressure they create, centrifugal fans are ideal for high pressure applications such as drying and air conditioning systems. As all of the moving parts of small centrifugal fans are enclosed and they also have particulate reduction properties that makes them ideal for use in air pollution and filtration systems. Remember to get the suitable fan accessories series for normal work of your fans. http://www.hongkefans.com/small-centrifugal-fan/