The Technology behind HEPA Air Purifiers – Clean Air Plus

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The Technology behind HEPA Air Purifiers

HEPA Air Filter Operating Image-Clean Air Plus

HEPA - or High Efficiency Particulate Arresting - filters are by no means a new technology or innovation. In fact, these special air filters were first invented by the US Atomic Energy Commission back during the 1940s to clean the air of radioactive particles. Today, this same technology is used to clean and improve the  indoor air quality of a multitude of places including businesses, hospitals and many private homes.

People have discovered the benefits of using a HEPA air purifier for controlling and alleviating the symptoms of allergies, asthma, and other respiratory conditions caused by polluted air. But how does this technology actually work?

The secret to the amazing abilities of HEPA filters lies in its unique design. Typically, if you were to think of a filter, you would likely think of a flat piece of paper with a lot of tiny, microscopic holes in it. These holes could take in dirty air and very small particles. However, they would also quickly become clogged and rendered useless by their very nature.

A HEPA filter takes the concept of tiny holes in paper, but combines it with an accordion-style design. The flat paper is folded over and over again, enabling a vast amount of filtering surface to be compacted into a handy little filter which is generally made up of a paper-like fiber or a polymer. When a particle comes into contact with a HEPA filter, it must contend with the filter's maze-like structure. It either gets captured by one of the filter's fibers after running directly into it, gets stuck as it tries to slip past, or very small particles get flummoxed by the flow of gas and its collisions cause it to be trapped by the HEPA filter. This three-pronged attack by the HEPA filter is what helps it work so efficiently. Everything from dust to mold spores to pollen can fall prey to the fibers in a HEPA filter.

The HEPA filter's incredible efficiency can be severely compromised, though, if air is unable to make contact with it in the first place. An air purifier must be designed in such a way that as much air as possible makes direct contact with a HEPA filter, otherwise, the air goes unfiltered and is returned into circulation with all of its impurities - exactly the opposite of the desired result!

Many poorly-designed air purifiers have this problem. They simply do not force a large enough percentage of the air that they intake through a HEPA filter. It is important to keep efficiency in mind, then, when purchasing a HEPA air purifier. Many manufacturers may claim that their product removes the most impurities from indoor air, but only the products sold by Clean Air Plus offer the ability to remove over 99.7% of all airborne particulates as small as 0.3 microns encountered through a HEPA filter. Therefore, these products are designed to work better than any others on the market today. 

Our entire line of HEPA air purifiers is engineered to put the HEPA filter to maximal use and all of our manufacturer's products truly capitalize on the benefits and design of these incredible filters. Not all HEPA filters are made alike, and those products are not meant to remove odors or chemicals from the air that is filtered through them.

The HEPA air purifiers offered by Clean Air Plus include activated carbon based materials which absorb these unpleasant problems and maximize the clean air potential for your home. You undoubtedly want to make sure that you are making the best investment possible, and you can rest assured that any product offered by Clean Air Plus is the best you could possibly find when it comes to HEPA air purifiers.


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