Using CADR<\/a> for air changes per hour (ACH) calculation is a more accurate method.<\/p>\n Using an air purifier\u2019s airflow to calculate the air changes per hour for a given room does not take into account:<\/p>\n CADR is more accurate because takes all three of these factors into account. CADR tests are also standardized and can be completed by third-party laboratories.<\/p>\n Learn More: Air changes per hour (ACH) and how to calculate it \u00bb <\/a><\/span><\/p>\n\n\n <\/p>\n Knowledge Base Protecting Yourself Air Purifiers Why is CADR Used Instead of Airflow in Calculating Air Changes per Hour (ACH)? Using CADR for air changes per hour (ACH) calculation is a more accurate method. Using an air purifier\u2019s airflow to calculate the air changes per hour for … Read more<\/a><\/p>\n","protected":false},"author":7807,"featured_media":0,"menu_order":0,"comment_status":"open","ping_status":"closed","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":[673,613],"helpie_tag":[1287,1284,266,239,145,357],"helpie_add_tag":[],"helpie_up_tag":[],"class_list":["post-5348","pauple_helpie","type-pauple_helpie","status-publish","format-standard","hentry","helpdesk_category-air-purifiers","helpdesk_category-protecting-yourself","helpie_tag-ach","helpie_tag-air-change","helpie_tag-air-purifier","helpie_tag-airflow","helpie_tag-cadr","helpie_tag-calculate"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5348","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\/7807"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/comments?post=5348"}],"version-history":[{"count":5,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5348\/revisions"}],"predecessor-version":[{"id":5690,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/5348\/revisions\/5690"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/media?parent=5348"}],"wp:term":[{"taxonomy":"helpdesk_category","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpdesk_category?post=5348"},{"taxonomy":"helpie_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_tag?post=5348"},{"taxonomy":"helpie_add_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_add_tag?post=5348"},{"taxonomy":"helpie_up_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_up_tag?post=5348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n