{"id":59568,"date":"2023-09-29T14:26:56","date_gmt":"2023-09-29T14:26:56","guid":{"rendered":"https:\/\/www.nafahq.org\/?p=59568"},"modified":"2023-09-29T16:05:31","modified_gmt":"2023-09-29T16:05:31","slug":"59568","status":"publish","type":"post","link":"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/","title":{"rendered":"Correction Regarding the Terms &#8220;MERV 17-20&#8221;"},"content":{"rendered":"\n\n\t<p>07\/10\/2023<\/p>\n<p>From: Todd McGrath, (ASHRAE) Chair SSPC 52.2<\/p>\n<p><strong>Subject: Correction Regarding the Terms &#8220;MERV 17-20&#8221;<\/strong><\/p>\n<p>To Whom It May Concern,<\/p>\nI am writing to address a common misunderstanding regarding the terms &#8220;MERV 17-20&#8221; and provide clarification to ensure accurate information is given. As the current Chair of SSPC 52.2, I believe it is important to correct the usage of the terms &#8220;MERV 17-20&#8221;, as it is incorrect and may lead to<br \/>\nmisconceptions.\n<p>MERV ratings range from 1 to 16, with a higher number indicating a higher level of filtration efficiency. However, it is essential to note that the MERV scale ends at MERV 16. Currently, there is no officially recognized or standardized &#8220;MERV 17-20&#8221; value. Therefore, any reference to &#8220;MERV 17-20&#8221; would be inaccurate and potentially misleading.<\/p>\n<p>I kindly request that you help spread awareness and correct any published &#8220;MERV 17-20&#8221; statements of this discrepancy and share this information with your colleagues, clients, or anyone who might be using the term &#8220;MERV 17-20.&#8221; By doing so, we can prevent the perpetuation of incorrect terminology and promote accurate understanding within the industry.<\/p>\n<p>Sincerely,<\/p>\nTodd McGrath, Chair of ASHRAE Standard 52.2<br \/>\nMichael Corbat, President of National Air Filtration<br \/>\nSteven Nicholas, Waterloo Filtration Institute<br \/>\nKen Winston, AFS\n\n","protected":false},"excerpt":{"rendered":"<p>07\/10\/2023 From: Todd McGrath, (ASHRAE) Chair SSPC 52.2 Subject: Correction Regarding the Terms &#8220;MERV 17-20&#8221; To Whom It May Concern, I am writing to address a common misunderstanding regarding the terms &#8220;MERV 17-20&#8221; and provide clarification to ensure accurate information is given. As the current Chair of SSPC 52.2, I believe it is important to&hellip;<\/p>\n","protected":false},"author":4340,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"tpl-full-width.php","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.2.1 (Yoast SEO v18.4.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Correction Regarding the Terms &quot;MERV 17-20&quot; - National Air Filtration Association<\/title>\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.nafahq.org\/2023\/09\/29\/59568\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Correction Regarding the Terms &quot;MERV 17-20&quot;\" \/>\n<meta property=\"og:description\" content=\"07\/10\/2023 From: Todd McGrath, (ASHRAE) Chair SSPC 52.2 Subject: Correction Regarding the Terms &#8220;MERV 17-20&#8221; To Whom It May Concern, I am writing to address a common misunderstanding regarding the terms &#8220;MERV 17-20&#8221; and provide clarification to ensure accurate information is given. As the current Chair of SSPC 52.2, I believe it is important to&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/\" \/>\n<meta property=\"og:site_name\" content=\"National Air Filtration Association\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-29T14:26:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-29T16:05:31+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"nafa@nafahq.org\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.nafahq.org\/#website\",\"url\":\"https:\/\/www.nafahq.org\/\",\"name\":\"National Air Filtration Association\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.nafahq.org\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/#webpage\",\"url\":\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/\",\"name\":\"Correction Regarding the Terms \\\"MERV 17-20\\\" - National Air Filtration Association\",\"isPartOf\":{\"@id\":\"https:\/\/www.nafahq.org\/#website\"},\"datePublished\":\"2023-09-29T14:26:56+00:00\",\"dateModified\":\"2023-09-29T16:05:31+00:00\",\"author\":{\"@id\":\"https:\/\/www.nafahq.org\/#\/schema\/person\/a5bd5c0a66b4d3c08f31ed99732f739c\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.nafahq.org\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Correction Regarding the Terms &#8220;MERV 17-20&#8221;\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.nafahq.org\/#\/schema\/person\/a5bd5c0a66b4d3c08f31ed99732f739c\",\"name\":\"nafa@nafahq.org\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.nafahq.org\/#personlogo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/927c841cb5a9352aa4c4f8e24e9ae08e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/927c841cb5a9352aa4c4f8e24e9ae08e?s=96&d=mm&r=g\",\"caption\":\"nafa@nafahq.org\"},\"url\":\"https:\/\/www.nafahq.org\/author\/terry-driscoll\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Correction Regarding the Terms \"MERV 17-20\" - National Air Filtration Association","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.nafahq.org\/2023\/09\/29\/59568\/","og_locale":"en_US","og_type":"article","og_title":"Correction Regarding the Terms \"MERV 17-20\"","og_description":"07\/10\/2023 From: Todd McGrath, (ASHRAE) Chair SSPC 52.2 Subject: Correction Regarding the Terms &#8220;MERV 17-20&#8221; To Whom It May Concern, I am writing to address a common misunderstanding regarding the terms &#8220;MERV 17-20&#8221; and provide clarification to ensure accurate information is given. 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