Benefits and Technology of a true HEPA Vacuum
HEPA (High‐Efficiency Particulate Air) vacuums differ from conventional vacuums. HEPA contains filters that are capable of trapping extremely small particles. A true HEPA is capable of removing 99.97% of all particles that are greater than 0.3 microns. Compared to a human hair which is 40 microns, you can visualize just how small of particles a HEPA filter is capable of collecting. According to industry standards, these particles which are equivalent to one-thousandth of a millimeter must be filtered out of the vacuum’s exhaust.
Not all HEPA vacuums available on the market match the standard of a true HEPA. So, consumers planning to buy a HEPA must keep in mind a few important factors. Beginners should look for a printed information on the filter that reads 0.3 microns which means it filters out 99.97% of particles greater than 0.3 microns. Less effective HEPA vacuums are labeled only with ‘HEPA type filter’. Certainly these are not the real deal and they in fact do not promise to pass a performance test. These type are usually less expensive and most often they only filter out less than 90% of particles. Another factor to check is the MERV rating which means Minimum Efficiency Reporting Value. It is an evaluation system on a scale of 1-20. It rates a filter’s ability to remove particles from the air. High ratings mean that it removes smaller particles and of course more particles.
HEPA filters are truly great in eliminating dust, smoke, mold, bacteria, and pollen. Switching from traditional filters to HEPA filters will help consumers greatly improve indoor air quality and will prevent those who suffer from allergies or asthma symptoms from inhaling harmful dust. HEPA filters do not let infinitesimal impurities and other polluted particles go back into the air during cleaning job. Unlike HEPA, conventional vacuums do not sufficiently trap dust particles and they expel air pollutants back into the air during vacuuming. Use of HEPA filters is therefore on the rise as they increasingly prove to be beneficial for use in the home and office.
How does a HEPA vacuum work?
In a traditional vacuum, the filter acts like a sieve. During vacuuming, all particles smaller than the largest opening can easily pass through in a traditional vacuum. HEPA vacuums, on the other hand, are designed to trap the smallest pollutants as air is forced through a fine mesh by separating particles that will then cling to the individual fibers. To do this job neatly, the unit will be found sealed in an effective HEPA filtration system. It will not allow any air flow around the filter therefore, forcing all of it through the mesh and then trapping most particles. In a 100% sealed unit, it prevents huge amounts of particles from going back to the surrounding air. The filter is engineered to trap inside substantial amounts of dust from the air flow that returns, preventing fewer dust fragments from escaping in the exhaust.
So those who are allergic to dust, suffering from asthma or are looking forward to improving their indoor air quality should immediately buy a true HEPA vacuum.