<div class='ui dimmer modals page' style='display: none;'><div id='helpie-password-modal' class='pauple_helpie ui modal small' style='display: none;'><div class='ui header'><i class='circular lock icon'></i> Password Protected</div><div class='item-content'><br /><label for='password_check'>Enter Password : </label><p><input type='password' id='password_check' name='password_check' class='password' value='' required></p></div><div class='actions'><div class='ui black deny button'>Nope</div><div class='ui positive right labeled icon button'>Yep, that's right!<i class='checkmark icon'></i></div></div><div class='clear'></div></div></div>{"id":4461,"date":"2020-03-17T10:17:14","date_gmt":"2020-03-17T10:17:14","guid":{"rendered":"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/how-big-should-my-hepa-filter-be-if-im-making-my-own-diy-air-purifier\/"},"modified":"2021-01-26T17:26:10","modified_gmt":"2021-01-26T09:26:10","slug":"how-big-should-my-hepa-filter-be-if-im-making-my-own-diy-air-purifier","status":"publish","type":"pauple_helpie","link":"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/how-big-should-my-hepa-filter-be-if-im-making-my-own-diy-air-purifier\/","title":{"rendered":"How Big Should My HEPA Filter Be if I&#8217;m Making My Own DIY Air Purifier?"},"content":{"rendered":"<div class='breadcrumbs pauple_helpie_breadcrumbs'><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/'>Knowledge Base<\/a> <span class='helpiekb_separator'> &nbsp;&nbsp; <i class='fa fa-angle-right' aria-hidden='true'><\/i>&nbsp;&nbsp;<\/span><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/cat\/protecting-yourself\/'>Protecting Yourself<\/a> <span class='helpiekb_separator'> &nbsp;&nbsp; <i class='fa fa-angle-right' aria-hidden='true'><\/i>&nbsp;&nbsp;<\/span><a class='mainpage-link' href='https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/how-big-should-my-hepa-filter-be-if-im-making-my-own-diy-air-purifier\/'>How Big Should My HEPA Filter Be if I'm Making My Own DIY Air Purifier?<\/a> <\/div><p>It\u2019s important to have a filter that at least covers the entire area of the fan. A HEPA filter is most effective when a high air pressure can build up behind it. This forces all the air through the HEPA filter, removing the particulate air pollution. Air will always take the easiest route for it when passing through your purifier. If you have a HEPA filter that&#8217;s smaller than the fan, the large gaps between the fan and HEPA will be the easiest routes for the air to flow. This means a high air pressure won&#8217;t be able to build up behind the filter, and your purifier\u2019s effectiveness will be drastically reduced.<\/p>\n<p><a href=\"https:\/\/smartairfilters.com\/en\/product-category\/hepa-filters\/\">Learn more about our range of simple, no-nonsense HEPA filters \u00bb<\/a><\/p>\n<div class='pauple-helpie-module article-voting'><span class='label'>Was this article useful?<\/span><span data-post-id='4461' data-user-id='0' class='icon-tray'><span  data-vote='thumbs up outline' class=' voting-icon thumbs up outline '><i data-content='thumbs up outline' class='thumbs up outline outline icon' aria-hidden='true'><\/i><count>3<\/count><\/span><span  data-vote='thumbs down outline' class=' voting-icon thumbs down outline '><i data-content='thumbs down outline' class='thumbs down outline outline icon' aria-hidden='true'><\/i><count>0<\/count><\/span><\/span><\/div><div style='clear:both;'><\/div>","protected":false},"excerpt":{"rendered":"<p>Knowledge Base &nbsp;&nbsp; &nbsp;&nbsp;Protecting Yourself &nbsp;&nbsp; &nbsp;&nbsp;How Big Should My HEPA Filter Be if I&#8217;m Making My Own DIY Air Purifier? It\u2019s important to have a filter that at least covers the entire area of the fan. A HEPA filter is most effective when a high air pressure can build &#8230; <a title=\"How Big Should My HEPA Filter Be if I&#8217;m Making My Own DIY Air Purifier?\" class=\"read-more\" href=\"https:\/\/smartairfilters.com\/learn\/smart-air-knowledge-base\/how-big-should-my-hepa-filter-be-if-im-making-my-own-diy-air-purifier\/\" aria-label=\"Read more about How Big Should My HEPA Filter Be if I&#8217;m Making My Own DIY Air Purifier?\">Read more<\/a><\/p>\n","protected":false},"author":4824,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"helpdesk_category":[613],"helpie_tag":[239,116,1047,1046,186,164,262,75,291,155,1048],"helpie_add_tag":[],"helpie_up_tag":[],"class_list":["post-4461","pauple_helpie","type-pauple_helpie","status-publish","format-standard","hentry","helpdesk_category-protecting-yourself","helpie_tag-airflow","helpie_tag-area","helpie_tag-big","helpie_tag-cover","helpie_tag-diy","helpie_tag-efficiency","helpie_tag-filter","helpie_tag-hepa","helpie_tag-how-to","helpie_tag-size","helpie_tag-tips"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie"}],"about":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/types\/pauple_helpie"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/users\/4824"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/comments?post=4461"}],"version-history":[{"count":5,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4461\/revisions"}],"predecessor-version":[{"id":5287,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4461\/revisions\/5287"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/media?parent=4461"}],"wp:term":[{"taxonomy":"helpdesk_category","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpdesk_category?post=4461"},{"taxonomy":"helpie_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_tag?post=4461"},{"taxonomy":"helpie_add_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_add_tag?post=4461"},{"taxonomy":"helpie_up_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_up_tag?post=4461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}