Averaging over 7 different tests on a polluted day in Beijing, the effect on 0.5 micron particles (left) was basically zero. The effect on 2.5 micron particles (right) was that they actually went\u00a0<\/span>down\u00a0<\/span>a little.<\/span><\/p>\n Our conclusion is wall-mounted air conditioners like this do NOT bring in dirty outdoor air. Instead, they pull air from the top of the machine and recirculate it through the room.<\/span><\/p>\n Click here to read the full article: https:\/\/smartairfilters.com\/en\/blog\/does-ac-bring-in-pm2-5\/<\/a><\/p>\n Knowledge Base Air Quality Information Do Wall-Mounted Air Conditioners Help Clean Up Indoor Air Pollution? Averaging over 7 different tests on a polluted day in Beijing, the effect on 0.5 micron particles (left) was basically zero. The effect on 2.5 micron particles (right) was that they actually went\u00a0down\u00a0a … Read more<\/a><\/p>\n","protected":false},"author":4824,"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":[612],"helpie_tag":[122,1073,1225,417,859,1224,481,1209,165,1226],"helpie_add_tag":[],"helpie_up_tag":[],"class_list":["post-4724","pauple_helpie","type-pauple_helpie","status-publish","format-standard","hentry","helpdesk_category-air-quality-information","helpie_tag-ac","helpie_tag-affect","helpie_tag-air-conditioner","helpie_tag-air-conditioning","helpie_tag-air-quality","helpie_tag-clean-up","helpie_tag-indoor","helpie_tag-low","helpie_tag-pm2-5","helpie_tag-wall-mounted"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4724","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=4724"}],"version-history":[{"count":4,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4724\/revisions"}],"predecessor-version":[{"id":5130,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/pauple_helpie\/4724\/revisions\/5130"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/media?parent=4724"}],"wp:term":[{"taxonomy":"helpdesk_category","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpdesk_category?post=4724"},{"taxonomy":"helpie_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_tag?post=4724"},{"taxonomy":"helpie_add_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_add_tag?post=4724"},{"taxonomy":"helpie_up_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/learn\/wp-json\/wp\/v2\/helpie_up_tag?post=4724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}