How Does It Work?

By creating negative pressure, air scrubbers capture the contaminated air and produces clean non-contaminated air. A negative pressure environment will help to contain the mold, dust, particles and odors within the workspace containment barrier. Air always flows from areas of higher pressure to areas of lower pressure. Creating and maintaining negative pressure creates inward airflow direction through any leaks or openings in the containment barrier. This prevents airborne contaminants from escaping into and contaminating other parts of the work area.

What if we don’t/can’t exhaust the filtered air to the outside?

Negative pressure will still be maintained if the HEPA filtered air is exhausted into an adjacent area inside the
building. HEPA-AIRE PAS can also be utilized for continuous air cleaning, by recirculating 100% of the filtered
air within the containment area. This will boost the ACH (AIR CHANGES PER HOUR) in the project zone and provide HEPA filtration, but it
will not create negative pressure

How do I create a negative pressure environment using HEPA Filtered Portable Air Scrubbers?

In order to create a negative pressure environment, more air must leave the space than enters it. First of all, the project area must be walled off with permanent or temporary construction barriers. Secondly, the Abatement Portable Air Scrubber(s) must be placed inside the construction area. Ductwork should be run from the system to somewhere outside of the project area, preferably to the outside of the building. Since the air is HEPA filtered, it is not mandatory to exhaust air to the outdoors