A negative air machine is very similar to an air scrubber. Like air scrubbers, negative air machines remove potentially dangerous particles from the air through a series of filters. This prevents employees and clients from breathing in those toxins, and it also helps construction sites pass air quality testing.
Unlike an air scrubber, a negative air machine uses ducting to remove tainted air from a closed controlled area. The filtered air is exhausted outside of the controlled area. This creates negative air pressure (some call this a vacuum effect) inside the controlled area. A negative air machine helps restrict the spread of pollutants to other areas inside the building.
Air scrubbers can be used as a negative air machine by adding ducting, sealed casing, specific airflow modifications, and a blower motor with speed variations to maintain the controlled area.
Now that you know the difference, you can make an educated decision for your next industrial rental.