In an exhaust system, contaminated air is simply captured and exhausted outside of the facility. This is generally done using a ventilation system with large fans that pull dirty air out and exhaust it to the outside, often through the roof. A make-up air unit is required to return clean outdoor air to the facility and avoid creating negative air pressure inside the building. In a filtration system, dirty air is pulled into a collector and through a series of filters. The filters remove particulate from the air. Clean air can then be returned to the facility.
A simple exhaust and make-up air ventilation system is the cheapest and easiest to install. If you only need ventilation to clear the air after occasional “dirty work,” this may be the right approach for you. Learn more about industrial ventilation and exhaust and make-up air systems: Industrial Air Filtration and Ventilation
However, if your industrial processes generate large amounts of dust and fumes on a regular and ongoing basis, filtration may be a better option. Filtration systems offer several advantages: