HEPA filters (HEPA - high efficiency particulate air filters) were originally designed in the 1940's and continue to be heavily utilized today. It can remove particles of or over 0.3 microns diameter which are the most difficult to remove by mechanical filtration. Today we will walk you through the HEPA Filter technology to get you fully understand the HEPA working condition.
How does a HEPA filter work? A fan blows air through a high tech filter, trapping particles as they pass through. A common sense but important point to remember is that air must pass through the HEPA air purifier filter in order to be cleaned. Air bypassing the filter will not be cleaned. This technology is categorized as Passive.
Generally speaking, HEPA working condition is great. We know that particles exist in many different types and sizes. The HEPA filter is designed to trap these particles as they pass into and through the filter medium. The HEPA filter is designed to maximize air flow and still maximize particle retention. It can attract these airborne particles like Pet Allergens (.3 to 100 microns), Dust and Dust Mite Allergens (10-40 microns), Pollens (10-100 microns), Plant Spores (10-70 microns), Airborne Fungi Spores (0.5 to 5 microns), Airborne Mold Spores (2-20 microns), and larger particles of tobacco smoke (0.003 to 0.04 microns). However, pure HEPA Filters do not remove most odors, chemicals, or gases as these particles are too small to be trapped by HEPA filters.
Although the filter will become less efficient over time, it is designed to effectively do its job as it slowly becomes "plugged up". HEPA filters do work effectively for what they are intended to do. One point worth repeating: The air must pass through the HEPA air purifier filter in order to be cleaned. This generally limits the effectiveness of the purifier to the room the unit is located in. Life expectancy depends on several factors, but generally is from 6 months to 5 years depending on the brand of air purifier. The size, material, and construction of the HEPA filter will ultimately determine its longevity. Higher quality HEPA filters last longer, may be larger and thus generally cost more.
That's all about HEPA working condition. We hope this information is useful for you. If you want to learn more information about Portable HEPA Filter, you can search more information on www.hefilter.com. Not only providing basic knowledge of filters, we also provide popular HEPA filter products of different sizes and types. You can buy high-quality HEPA filters with a reasonable price here.
