{"id":26038,"date":"2023-08-15T23:51:31","date_gmt":"2023-08-15T15:51:31","guid":{"rendered":"https:\/\/smartairfilters.com\/?p=26038"},"modified":"2023-08-15T23:51:34","modified_gmt":"2023-08-15T15:51:34","slug":"xiaomi-air-purifier-mi-4-review","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/xiaomi-air-purifier-mi-4-review\/","title":{"rendered":"Xiaomi Air Purifier 4 Review: One Big Concern"},"content":{"rendered":"<p>For many years, Xiaomi air purifiers have been one of the better-value air purifiers in many markets around the world. Unfortunately, Smart Air\u2019s 2023 review of the new Xiaomi Smart Air Purifier 4 found the Mi 4 comes with potentially dangerous technology.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Xiaomi Mi 4 Air Purifier: What\u2019s New?<\/h2>\n\n\n\n<p>The Xiaomi air purifier 4 uses an ionizer. <a href=\"https:\/\/smartairfilters.com\/en\/blog\/do-ionizer-air-purifier-work\/\">What is an ionizer<\/a>? In short, an ionizer shoots out millions of&nbsp;negative ions that help attract particles to surfaces. Ionizers are a cheap way for air purifier companies to increase the CADR (a measure of a purifier\u2019s effectiveness) of their purifier.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"275\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2019\/04\/Ionizers-5.png\" alt=\"\" class=\"wp-image-7854\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2019\/04\/Ionizers-5.png 500w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2019\/04\/Ionizers-5-300x165.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<p>Unfortunately, studies show the ionizer in the new Xiaomi air purifier 4 comes with health risks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\">Ionizer Function Enabled By Default<\/h3>\n\n\n\n<p>According to Xiaomi&#8217;s global support, the ionizer function is enabled by default and can be disabled through the Mi Home app. However, this piece of information is not clearly stated on the Mi 4 Air Purifier product page. Users may not be aware that they can disable this function and continue using a function that is harmful.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"179\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/image.png\" alt=\"\" class=\"wp-image-27221\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/image.png 800w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/image-600x134.png 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/image-300x67.png 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2023\/08\/image-768x172.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-align-center\">Ionizers Create PM2.5 Pollution and Formaldehyde<\/h3>\n\n\n\n<p>By adding an ionizer, Xiaomi can improve the CADR of the Mi 4 and make them look more effective. The reality is, an ionizer can be dangerous and actually do much more harm than good.<\/p>\n\n\n\n<p>Research shows <a href=\"https:\/\/smartairfilters.com\/en\/blog\/ionizers-can-increase-pollution-particles-formaldehyde\/\">ionizers can increase PM2.5 pollution<\/a> in the air significantly.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239-1024x916.jpg\" alt=\"Ionizer Increases Particulate Matter\" class=\"wp-image-14183\" width=\"610\" height=\"545\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239-1024x916.jpg 1024w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239-600x537.jpg 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239-300x268.jpg 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239-768x687.jpg 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/ionizierspm-page-001-2-e1613517354239.jpg 1095w\" sizes=\"(max-width: 610px) 100vw, 610px\" \/><\/figure><\/div>\n\n\n<p>Formaldehyde also increased with ionizer use.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773-1024x985.jpg\" alt=\"Ionizers Increase Formaldehyde\" class=\"wp-image-14184\" width=\"532\" height=\"511\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773-1024x985.jpg 1024w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773-600x577.jpg 600w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773-300x289.jpg 300w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773-768x739.jpg 768w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2021\/01\/form-page-001-2-e1613517524773.jpg 1060w\" sizes=\"(max-width: 532px) 100vw, 532px\" \/><\/figure><\/div>\n\n\n<p>Adding a device that creates air pollution to an air purifier that is supposed to remove air pollution is a bit counterintuitive. <\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Xiaomi 4 Air Purifier Follows New Worrying Trend<\/h2>\n\n\n\n<p>In recent years, many air purifiers have turned to cheap ionizers so they can market a higher CADR of their purifiers.<\/p>\n\n\n\n<p>Smart Air engineers tore apart a <a href=\"https:\/\/smartairfilters.com\/en\/blog\/blueair-air-purifiers-review-ionizer-ozone\/\">Blueair air purifier<\/a> and found an ionizer inside of the machine.&nbsp;Other large air purifier companies also include ionizers, such as Medify Air, Levoit, and many more. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2022\/07\/image-3-e1660608482283.png\" alt=\"Blueair ionizer\" class=\"wp-image-23045\" width=\"485\" height=\"269\" srcset=\"https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2022\/07\/image-3-e1660608482283.png 396w, https:\/\/smartairfilters.com\/wordpress\/wp-content\/uploads\/2022\/07\/image-3-e1660608482283-300x167.png 300w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/><figcaption class=\"wp-element-caption\">Blueair purifier Smart Air engineers tore apart<\/figcaption><\/figure><\/div>\n\n\n<p>At Smart Air, we stand by our social enterprise pledge of helping people breathe safely without added gimmicks to make a quick buck. Therefore, we will never add ionizers to <a href=\"https:\/\/smartairfilters.com\/en\/shop\/\">our purifiers<\/a>. <\/p>\n\n\n\n<p>Read More: <a href=\"https:\/\/smartairfilters.com\/en\/blog\/four-steps-to-choosing-the-best-air-purifier\/?gclid=CjwKCAiA5Y6eBhAbEiwA_2ZWIUWs0195mySNQf0R5AwP2IxdctyjRBG7hTK0HwwNg0L_-x6xCCxTsRoC1owQAvD_BwE\">4-Step Guide to Buying an Air Purifier<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>For many years, Xiaomi air purifiers have been one of the better-value air purifiers in many markets around the world. Unfortunately, Smart Air\u2019s 2023 review of the new Xiaomi Smart Air Purifier 4 found the Mi 4 comes with potentially dangerous technology. Xiaomi Mi 4 Air Purifier: What\u2019s New? The &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Xiaomi Air Purifier 4 Review: One Big Concern\" class=\"read-more button\" href=\"https:\/\/smartairfilters.com\/en\/blog\/xiaomi-air-purifier-mi-4-review\/#more-26038\" aria-label=\"Read more about Xiaomi Air Purifier 4 Review: One Big Concern\">Read more<\/a><\/p>\n","protected":false},"author":9087,"featured_media":26040,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":"20657,11976,22029,13492,5189,3961","_relevanssi_noindex_reason":"","footnotes":""},"categories":[17,190,262],"tags":[762,882,248],"class_list":["post-26038","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-pollution","category-air-purifiers","category-reviews","tag-ionizers","tag-mi-4","tag-xiaomi","resize-featured-image"],"acf":[],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/26038","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/users\/9087"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/comments?post=26038"}],"version-history":[{"count":11,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/26038\/revisions"}],"predecessor-version":[{"id":27222,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/26038\/revisions\/27222"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media\/26040"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media?parent=26038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/categories?post=26038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/tags?post=26038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}