{"id":105,"date":"2025-11-15T13:44:21","date_gmt":"2025-11-15T05:44:21","guid":{"rendered":"http:\/\/smartairfilters.com\/cn\/?post_type=product&p=105"},"modified":"2025-11-15T13:45:03","modified_gmt":"2025-11-15T05:45:03","slug":"hepa-filter","status":"publish","type":"product","link":"https:\/\/smartairfilters.com\/cn\/en\/product\/hepa-filter\/","title":{"rendered":"DIY EPA Filter"},"content":{"rendered":"

<\/p>\n

E12 EPA filter – filters out 99.5% of all particles<\/h2>\n

E12 EPA filter are filters that capture at least 99.5% of particles. The ones we use capture 99.5% of particles, including the really tiny ones.<\/p>\n

\"HEPA<\/p>\n

How often should I change the HEPA\/EPA filter?<\/h2>\n

We recommend replacing your filter after 140 days of use at 8 hours a day at the latest. That\u2019s maximum 1000 hours in total. We ship replacement HEPA\/EPA starting at 75RMB from our store.<\/p>\n

Why 140 days? Smart Air co-founder Gus tested a single HEPA\/EPA on his Original DIY for 200 days to see how long it would last in real Beijing air. After 100 days of use at 8 hours a day, effectiveness dropped 4%. After 200 days of testing, Gus\u2019s dirty filter was only removing half the particles in the room.<\/p>\n

\"HEPA<\/p>\n

We recommend changing your filter after 1000 hours. You can use this number to calculate how often you need to change your filter based on how often you have your purifier running. For example, if you keep your purifier on 12 hours a day, we\u2019d recommend replacing your filter after 60 days.<\/p>\n

We know that buying new HEPA\/EPA filters is a significant recurring cost, so we do our best to keep prices low.<\/p>\n

Can you make HEPA\/EPA even cheaper?<\/h2>\n

We tested a 30RMB filter from China and compared it to our own filters. We found the difference in effectiveness to be severe ,so we recommend avoiding unknown HEPA\/EPA filters that appear too good to be true.<\/p>\n

\"Smart<\/p>\n

Read more about the tests we did with a cheap HEPA\/EPA on our blog<\/a>.<\/p>\n

Can I wash my HEPA\/EPA filter?<\/h2>\n

We tested this in our labs, we tried washing, vacuuming and scrubbing a HEPA\/EPA filter to find out if there was a cheaper way of making your filter last longer. Turns out none of these methods were effective in increasing the lifespan of a HEPA filter, so we still recommend replacing them when their time is up.<\/p>\n

\"Can<\/p>\n

\n\n\n\n\n\n\n\n
Your Purchase Includes<\/th>\n1x DIY EPA Filter<\/td>\n<\/tr>\n
Type<\/th>\nE12 (99.5%)<\/td>\n<\/tr>\n
Colour<\/th>\nWhite with black rim<\/td>\n<\/tr>\n
Lifepsan (hours)<\/th>\n1000<\/td>\n<\/tr>\n
Dimensions L x W x H (cm)<\/th>\n30\u00a0x 2 x 30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

EPA filters are what trap small particles like PM2.5, and they\u2019re not expensive! We performance tested filters from all the manufacturers we could find, chose the top performer, and order them in bulk so we can pass the savings along to air-breathers like you.<\/p>\n","protected":false},"featured_media":5048,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"product_brand":[],"product_cat":[8],"product_tag":[55],"class_list":{"0":"post-105","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-hepa-filters","7":"product_tag-smart-air","8":"product_shipping_class-diy-hepa-filter-1","9":"resize-featured-image","10":"sales-flash-overlay","11":"woocommerce-text-align-center","12":"woocommerce-image-align-center","13":"do-quantity-buttons","14":"wc-has-gallery","16":"first","17":"instock","18":"downloadable","19":"virtual","20":"purchasable","21":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":2,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product\/105\/revisions"}],"predecessor-version":[{"id":16518,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product\/105\/revisions\/16518"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/media\/5048"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/media?parent=105"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product_brand?post=105"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product_cat?post=105"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/cn\/en\/wp-json\/wp\/v2\/product_tag?post=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}