True HEPA Air Purifers Are Actually Much Better

By Heath Plunger

Items advertised as "True" HEPA air purifiers are often available when one is shopping about for a HEPA air purifier. Considering something is being labeled as true must mean there as some out there that are false, correct? You will not find any labeled "sub-standard", "false" or any other such derogatory adjective. True HEPA air purifiers are simply comparing themselves to other systems and then leaving it up to the consumer to know what they need and how it will affect them. This article looks at what comparisons the "True" HEPA air purifiers are making.

Differences! True HEPA Air Purifiers Have Them

A True HEPA air purifier, also known as an absolute HEPA air purifier, is different even from other HEPA air purifiers. When companies reference the effectiveness of HEPA air purifiers as stated by government entities such as the EPA and OSHA, they are generally referring to the True type, even if they do not blatantly say so. Although there are other types of air purifiers out there, True HEPA air purifiers are the only ones that are used in sensitive areas such as hospitals and laboratories.

Particles! True HEPA Air Purifiers Stop Them

70 to 100 microns of thickness is the typical human hair. Consider how small 0.3 micron particles must be, then consider that although they must be tiny the true HEPA air purifier must be able to filter out at least 97 percent of particles that size to qualify. Although this may sound very technical, keep in mind it is actually a very important consideration. Particles of this size are the hardest to filter, even the smaller ones are easier to filter out. 0.3 microns are small enough in size to bypass the human body's defenses to get into the respiratory system and cause many illnesses. Thus, it is important that the true HEPA air purifiers be able to filter these tiny particles.

True HEPA Air Purifiers Actually Work Better When Dirty

This part of our discussion is where you will see both the main difference between true HEPA air purifiers and others and also where the terms "Absolute" and "True" become one and the same. Designed to be more effective dirty than when clean, the absolute filtration system's trapped particles will actually increase the power of the true HEPA air purifier's filtration. Very simple in reality, the explanation is that the spaces for the the air to pass becomes smaller as the dirt builds up.

How Do I Know If It's A True HEPA Air Purifier?

Look for products that actually advertise that they are True HEPA air purifiers. The alternative is the HEPA-type air purifier, which is really just an imitation, and is not held to any particular standard. If you find a purifier that doesn't say either HEPA-type or True HEPA, you can also reference other specifications on the box. Look for one that filters 97% or more of the 0.3 micron particles if you want a True HEPA air purifier. - 31822

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