Industrial exhaust fan is probably the most widely used equipment in both commercial and industrial facility applications throughout the world, due to its ability to effectively and efficiently pull air out of a building thus creating the availability for fresh air to enter the building. Hospitals, schools, warehouses, manufacturing plants, foundries, bakeries, paint shops, workshops, machine shops, parking garages, or commercial kitchens all use some form of a venting fan.

Diamond exhaust fan draws out polluted air from premises and replaces it with fresh air. Air is considered polluted when it contains high amounts of Hot air, moisture, carbon dioxide, vaporized chemicals, dust, fungal spores, and unpleasant odors. Diamond air exhaust fans combat indoor air pollution by ejecting the unclean indoor air into the outside environment and letting in clean air from the outside. Exhaust fans are necessary because they prevent damage to goods and property due to mildew, chemical deposition, and overheating.