{"id":760,"date":"2013-08-10T10:53:21","date_gmt":"2013-08-10T02:53:21","guid":{"rendered":"http:\/\/smartairfilters.com\/cn\/?p=760"},"modified":"2020-07-15T11:56:14","modified_gmt":"2020-07-15T03:56:14","slug":"china-english-%e6%8f%90%e9%97%ae%e5%9b%9e%e7%ad%94-3","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/china-english-%e6%8f%90%e9%97%ae%e5%9b%9e%e7%ad%94-3\/","title":{"rendered":"Q&A: How Long Can HEPA Filters Last?"},"content":{"rendered":"

passport4adragon<\/strong><\/a> \u63d0\u95ee: Hi, I’m in Shanghai and recently put together your DIY purifier and bought the same fan and filter you suggested – I think it’s working! A couple of questions – <\/strong><\/p>\n

    \n
  1. I bought the exact same filter you did on Taobao – how often should it be replaced if I run the purifier every night? <\/strong><\/li>\n
  2. The filter came with 3 extra thinner, foamy filter pieces (if you revisit the Taobao page, I think it’s item #1, I don’t know about #3) – should I stick that in between the actual filter and the fan, or not? Thanks!<\/strong><\/li>\n<\/ol>\n

     <\/p>\n

    Great questions!<\/p>\n

      \n
    1. I don\u2019t have good data on how often the filter should be replaced. I\u2019ve been replacing mine after the filter turns dark, but that\u2019s just based on my intuition, not data. What I need to do is use the particle counter to test effectiveness over time and figure out at which point it starts to lose effectiveness. Hopefully I\u2019ll have more on that later!UPDATE: How long do Smart Air’s HEPA filters last? At least 90 days<\/a>Wondering if you can prolong the lifespan of your HEPA filter? Read this: Can I Clean or Wash HEPA Filters?<\/a><\/li>\n
    2. You\u2019re right! The filter comes with some \u201cpre-filters.\u201d I don\u2019t use them, but you could use them. They mainly help to filter the bigger particles such as hair, dust, your pet’s fur, etc. Thus, on the plus side, they\u2019d probably help your HEPA last longer. On the downside, I\u2019d be worried the pre-filters would cut down on the air flow too much, but I haven\u2019t tested that possibility with the particle counter.<\/li>\n<\/ol>\n

      <\/p>","protected":false},"excerpt":{"rendered":"

      passport4adragon \u63d0\u95ee: Hi, I’m in Shanghai and recently put together your DIY purifier and bought the same fan and filter you suggested – I think it’s working! A couple of questions – I bought the exact same filter you did on Taobao – how often should it be replaced if … <\/p>\n

      Read more<\/a><\/p>\n","protected":false},"author":1035,"featured_media":0,"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":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[259],"tags":[448,87,88],"class_list":["post-760","post","type-post","status-publish","format-standard","hentry","category-filters","tag-hepa-longevity","tag-smart-air","tag-taobao"],"acf":[],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/760","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\/1035"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/comments?post=760"}],"version-history":[{"count":6,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/760\/revisions"}],"predecessor-version":[{"id":11470,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/760\/revisions\/11470"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media?parent=760"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/categories?post=760"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/tags?post=760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}