HEPA Filtered Air Scrubber

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An air scrubber works to remove contaminants and odors in its surrounding environment. It uses filters to trap particles, gases and chemicals within a given area. These units draw air in from the surrounding environment and pass it through a series of filters to remove contaminants. The size and complexity of the air scrubber unit depends on the space it’s being used for, and, the type, size and range of contaminants it is expected to remove from the area. The use of a HEPA filter system compared to a standard carbon filter system is more effective and can remove at least 99.97% of airborn particles.

Air is composed of many particles including but certainly not limited to gases, microscopic and sub-microscopic particles, and varying amounts of water vapor. Particles can be solid or liquid, visible or invisible, organic or inorganic, and harmless or toxic. ‘Clean’ air contains over a million particles and ‘dirty’ contains over 30 million particles. Depending on the size of particles, when inhaled, they are captured in the upper respiratory tract, in the conducting airways to the lungs, or most dangerously drawn into the lungs and held there. Those trapped in the lungs are the smallest particles that we breath in and pose a great risk to one’s health and require a HEPA filter for adequate removal.

While natural occurring contaminants such as dirt, hair and dead skin cell cause no harmful effects when inhaled, other unseen contaminants such as bacteria, toxic gases, mold, asbestos and chemical fumes are great health risks. The job of air scrubbers is to protect the people exposed to these contaminants and provide a clean and healthy working environment. Although a general purpose filter is fine for dust particle removal, using an air scrubber  will further ensure that the smaller and more than often health hazardous particles are also trapped.

Air scrubbers are commonly the choice for hospitals, healthcare facilities, crime scene cleanup, construction sites, drywall dust air cleaning, virus infection air control, paint fume air cleaning, bio-hazard removal, water & fire restoration, renovation projects and even in H1N1 patient isolation rooms. The list just shows how extremely effective these machines are at removing air contaminants.

A typical HEPA filtered air scrubber system draws in contaminated are through an intake and passes it through a polyester pre-filter, pleated media filter, carbon/potassium filter and lastly the HEPA filter. The polyester pre-filter is the first stage filter that removes larger particles and debris. This first filter needs regular changing and vacuuming in between replacements. The pleated media filter is the second stage filter that removes medium particles and also needs to be replaced every so often. The HEPA filter is the final stage filter and removes the tiniest of particles and is where air is filtered with even higher efficiency, removing every bit of contaminants from the surrounding environment. You want to keep your pre-filters changed often so that they can work like they are supposed to and then you will have to change your HEPA filter less often.

Air pollution is one of the most common causes of severe health problems when it’s drawn into our bodies. We breath the air around us, unaware of the millions of particles we breathe in with it. The best possible benefit from air cleaners come from those that are fitted with HEPA filters. These filters are just so highly efficient that the technology is employed in almost all air related devices today such as air conditioners and vacuum cleaners.

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This article was published on Friday 27 July, 2012.

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