To determine the required volume or CFM, first determine the room volume by multiplying the room’s length, times the width, times the height….

Sound is the sensation perceived by the ear, resulting from rapid fluctuations in air pressure. A vibrating or rotating object creates areas of high and low pressure which causes the eardrum to….

There are two basic impeller types, Centrifugal, also called a wheel, and Axial also called a propeller. For centrifugal impellers, air travels into the impellers and exits at a 90 degree angle….

Direct drive and belt drive types. There are some key differences to consider between direct drive and belt drive fans….

To identify why fans do not run as expected, there are many reasons to check. But first and foremost, it is vital to know what is the accepted performance standard….

When determining the fan type, many things need to be considered: the location-indoor or outdoor, mounting type such as roof curb, sidewall….