{"id":4578,"date":"2023-12-20T12:01:51","date_gmt":"2023-12-20T04:01:51","guid":{"rendered":"https:\/\/addmaker.a2hosted.com\/hencolin\/?p=4578"},"modified":"2026-07-09T16:27:55","modified_gmt":"2026-07-09T08:27:55","slug":"what-is-a-hepa-air-filter-efficiency-applications-guide","status":"publish","type":"post","link":"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/","title":{"rendered":"What is HEPA air filter?"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u5927\u7db1<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#What_is_HEPA_air_filter\" >What is HEPA air filter?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#What_is_the_filtration_rating_for_EN1822_ASHRAE_standards_Whats_the_difference_in_between\" >What is the filtration rating for EN1822 &amp; ASHRAE standards? What\u2019s the difference in between?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#How_does_HEPA_air_filters_work\" >How does HEPA air filters&nbsp;work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#FAQ_for_HEPA_Air_Fitlers\" >FAQ for HEPA Air Fitlers<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#1_How_long_shall_HEPA_filters_be_replaced\" >1. How long shall HEPA filters&nbsp;be replaced?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#2_What_kind_of_particles_HEPA_filters_can_trap\" >2.&nbsp;What kind of particles HEPA filters&nbsp;can trap?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#3_What_is_micron\" >3.&nbsp;What is micron?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/#4_What_is_the_difference_between_synthetic_fiber_and_glassfiber\" >4.&nbsp;What is the difference between synthetic fiber and glassfiber?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_HEPA_air_filter\"><\/span><strong>What is HEPA air filter?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><style type=\"text\/css\">\na:link{\ntext-decoration:none;\ncolor:#333333;\n}\na:hover {\ntext-decoration:underline;\ncolor:green;\n}<\/style><a href=\"https:\/\/www.hencolin.com\/en\/product-list.asp?kind=843\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>HEPA (High Efficiency Particulate Air) filters<\/strong><\/a>&nbsp;stands for high quality filters that are capable of trapping&nbsp;<strong><a href=\"https:\/\/www.hencolin.com\/en\/intro.asp?in=267\"><u>99.97% @ 0.3<\/u><\/a><\/strong>&nbsp;microns or larger airborne particles in the air. And the micron is a short of \u201cmicrometer\u201d or shown as a symbol of \u201c\u03bcm\u201c.&nbsp;<a href=\"https:\/\/www.hencolin.com\/en\/product-list.asp?kind=843\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>HEPA air filters<\/strong><\/a>&nbsp;are composed of thousands of extremely fine fibers to intercept microscopic particles and larger ones. They can remove particulates in the air in a very effective way.&nbsp;<\/p>\n\n\n\n<p>They are also used in indoor air purifiers or in industries that require high efficiency quality, such as pharmaceuticals, power plants, food processing industries, aerospace and cleanroom, etc.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?ssl=1\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1280\" height=\"466\" src=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=1280%2C466&#038;ssl=1\" alt=\"\" class=\"wp-image-4562\" srcset=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=300%2C109&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=1024%2C373&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=768%2C280&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=1536%2C559&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA02-2.jpeg?resize=600%2C218&amp;ssl=1 600w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" data-recalc-dims=\"1\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?ssl=1\"><img decoding=\"async\" width=\"1280\" height=\"466\" src=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=1280%2C466&#038;ssl=1\" alt=\"\" class=\"wp-image-4564\" srcset=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=300%2C109&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=1024%2C373&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=768%2C280&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=1536%2C559&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA01-1.jpeg?resize=600%2C218&amp;ssl=1 600w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" data-recalc-dims=\"1\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_filtration_rating_for_EN1822_ASHRAE_standards_Whats_the_difference_in_between\"><\/span><strong>What is the filtration rating for EN1822 &amp; ASHRAE standards? What\u2019s the difference in between?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The filtration efficiency is differently rated around the world. The most common ones are European EN1822: 2009 &amp; US MERV ratings. In Europe,&nbsp;<a href=\"https:\/\/www.hencolin.com\/en\/product-list.asp?kind=843\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>HEPA filters<\/strong><\/a>&nbsp;are classified by EN1822 under MPPS (Most Penetrating Particle Size) testing method. While ASHRAE rating for MERV (Minimum Efficiency Rating Values) regulates MERV17 (99.97%@0.3&nbsp;\u00b5m<strong>)<\/strong>&nbsp;or higher as HEPA filtration.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table-1024x725.jpg?ssl=1\"><img decoding=\"async\" width=\"1024\" height=\"725\" src=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=1024%2C725&#038;ssl=1\" alt=\"\" class=\"wp-image-4566\" srcset=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=1024%2C725&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=300%2C212&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=768%2C543&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=1536%2C1087&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?resize=600%2C425&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/product_file_air-filter-Rating-Table.jpg?w=1754&amp;ssl=1 1754w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-recalc-dims=\"1\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_HEPA_air_filters_work\"><\/span><strong>How does HEPA air filters&nbsp;work?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The applications of\u00a0<strong><a href=\"https:\/\/www.hencolin.com\/en\/product-category\/hepa-filter\/\" target=\"_blank\" rel=\"noreferrer noopener\">HEPA filters<\/a><\/strong>\u00a0in your living surroundings can help trap the airborne particles and contaminants in the fine web of fibers and get rid of any sources of allergens, dusts, bacteria, smokes, and bad odors, etc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ_for_HEPA_Air_Fitlers\"><\/span><strong>FAQ for HEPA Air Fitlers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_How_long_shall_HEPA_filters_be_replaced\"><\/span>1. How long shall HEPA filters&nbsp;be replaced?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Ans: Normally, the HEPA filters&#8217; service life can be around 12 months but still it shall depend on the application environments. When your surroudings are cleaner with few dusts, the lifespan can be even longer.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/Final-filters-for-cleanroom01.jpeg?ssl=1\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"559\" src=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/Final-filters-for-cleanroom01.jpeg?resize=1280%2C559&#038;ssl=1\" alt=\"\" class=\"wp-image-4581\" srcset=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/Final-filters-for-cleanroom01.jpeg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/Final-filters-for-cleanroom01.jpeg?resize=300%2C131&amp;ssl=1 300w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" data-recalc-dims=\"1\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_What_kind_of_particles_HEPA_filters_can_trap\"><\/span><strong>2.&nbsp;What kind of particles HEPA filters<\/strong><strong>&nbsp;can trap?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Ans: The\u00a0<a href=\"https:\/\/www.hencolin.com\/en\/product-list.asp?kind=843\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>HEPA filters\u00a0<\/strong><\/a>can trap the dust particles\u00a0<a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/10\/product_file_air-filter-Rating-Table-1024x725.jpg?ssl=1\" target=\"_blank\" rel=\"noreferrer noopener\"><strong><u>99.97%@0.3<\/u>\u00a0<\/strong><\/a><a href=\"https:\/\/www.hencolin.com\/en\/intro.asp?in=267\" target=\"_blank\" rel=\"noreferrer noopener\">\u00b5m\u00a0<\/a>that includes dust, pollen, hair, lint, dust mites, smog, bad odors, mold spores, cigarettes, bacteria, virus and allergens, etc.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA00-en02.jpeg?ssl=1\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"743\" src=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA00-en02.jpeg?resize=1280%2C743&#038;ssl=1\" alt=\"\" class=\"wp-image-4583\" srcset=\"https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA00-en02.jpeg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/www.hencolin.com\/wp-content\/uploads\/2023\/12\/news-WIHEPA00-en02.jpeg?resize=300%2C174&amp;ssl=1 300w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" data-recalc-dims=\"1\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_What_is_micron\"><\/span><strong>3.&nbsp;What is micron?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Ans: A micron is a unit of measure that stands for 1 million of a meter. To be more specific, the human hair is approximately 70 micron, dust mites for 100-300 microns, and bacteria is about 1-10 microns.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_What_is_the_difference_between_synthetic_fiber_and_glassfiber\"><\/span><strong>4.&nbsp;What is the difference between synthetic fiber and glassfiber?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Ans: The HEPA synthetic fibers are commonly applied for indoor air purifiers which is more environmentally friendly but more expensive. While the glassfiber is mostly applied for industrial areas, hospitals, power plants, cleanrooms, commercial areas, etc., which is more cost saving.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is HEPA Air Filters?<br \/>\nHEPA (High Efficiency Particulate Air) filters stands for high quality filters that are capable of trapping 99.97% 0.3 microns or larger airborne particles in the air. And the micron is a short of \u201cmicrometer\u201d or shown as a symbol of \u201c\u03bcm\u201c. HEPA air filters are composed of thousands of extremely fine fibers to intercept microscopic particles and larger ones. They can remove particulates in the air in a very effective way.<\/p>\n","protected":false},"author":1,"featured_media":12326,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_jetpack_memberships_contains_paid_content":false},"categories":[141],"tags":[],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is HEPA air filter? - Hencolin International |Industrial Air Filter Manufacturer<\/title>\n<meta name=\"description\" content=\"Learn what a HEPA air filter is, how it captures 99.97% of 0.3 \u03bcm particles, and how EN1822, ASHRAE\/MERV ratings and applications differ.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hencolin.com\/en\/air-filter-knowledge-installation-guides-hencolin\/what-is-a-hepa-air-filter-efficiency-applications-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is HEPA air filter? 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