{"id":7568,"date":"2024-05-23T20:26:39","date_gmt":"2024-05-23T12:26:39","guid":{"rendered":"https:\/\/smartairfilters.com\/?p=7568"},"modified":"2024-08-20T15:50:31","modified_gmt":"2024-08-20T07:50:31","slug":"can-you-turn-off-your-purifier-when-you-sleep","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/can-you-turn-off-your-purifier-when-you-sleep\/","title":{"rendered":"Can I Turn Off My Air Purifier While I Sleep at Night?"},"content":{"rendered":"

Here\u2019s a question I often get asked about air purifiers: \u201cI don\u2019t want to hear the fan while I sleep, so can I run my air purifier for an hour and then turn it off before I sleep at night? Or should I sleep with my air purifier on at night?”<\/p>\n\n\n\n

The logic is that, since the doors and windows are closed, once we clean all the air in the room, it should stay clean. This makes perfect sense! However, the key to this assumption is whether air stays clean<\/strong> in a closed room.<\/p>\n\n\n\n

Test: How Long to Run Air Purifier in Bedroom?<\/h3>\n\n\n\n

To see whether you should sleep with your air purifier on, I tested how long it would take to clean the air in a sealed room<\/a><\/span>. We set a Smart Air Cannon<\/span> on a timer to turn on for two hours every day in a 13.5m2<\/sup> Beijing bedroom. The doors and windows were closed, and nobody entered the room for 6 days.<\/p>\n\n\n\n

(This test is already more conservative because, in real life, people would be opening and closing the doors to enter or leave the room.)<\/p>\n\n\n\n

Here\u2019s what happened the first day after the Cannon turned on.<\/p>\n\n\n

\n
\"the<\/figure><\/div>\n\n\n

What happened after the Cannon went off? Did the air stay clean? Did the particulate go up slowly?<\/p>\n\n\n

\n
\"particles<\/figure><\/div>\n\n\n

Even though the room was closed, and no one was home, after turning off the air purifier the pollution particulates went up in a hurry.<\/p>\n\n\n\n

Was that first day just a fluke? Here\u2019s what happened to indoor pollution over all six days.<\/p>\n\n\n

\n
\"indoor<\/figure><\/div>\n\n\n

Each time the purifier turned off, the air got polluted in a hurry. But just how quickly does that happen? I averaged out the six tests into this one graph:<\/p>\n\n\n

\n
\"how<\/figure><\/div>\n\n\n

At the 15-minute mark, the air is 50% as dirty as it was before turning on the purifier.<\/p>\n\n\n\n

After 80 minutes, the air is just as dirty as it was before. This means that if you turn off your purifier before sleeping, for most of the night your air will be just as bad as not having a purifier.<\/p>\n\n\n\n

Why Do The Pollution Levels Go Back Up?<\/h3>\n\n\n\n

This data reveals that outdoor air is constantly getting into our homes, even if the doors and windows are closed. Because our rooms aren\u2019t perfectly sealed, dirty air is constantly entering our homes through gaps between windows, cracks in walls, or under doors, even if we can\u2019t see or feel it.<\/p>\n\n\n\n

How to Keep Air Pollution Out<\/h3>\n\n\n\n

You can fight this. One way to keep air pollution out is by using insulation tape to plug up gaps around windows and doors.<\/p>\n\n\n

\n
\"keep<\/figure><\/div>\n\n\n

The Downsides of Sealing Rooms<\/h3>\n\n\n\n

However, there is a cost. The better sealed our homes are, the more the CO2 we breathe out will build up. That\u2019s not a big deal if there aren\u2019t many people in the room, but if there are several people in the room, CO2 can reach levels that will make people drowsy<\/a><\/span>.<\/p>\n\n\n\n

Some other pollutants coming from indoors will build up too. One example is formaldehyde coming from new furniture and flooring. Smart Air\u2019s real-world tests show that activated carbon filters will reduce formaldehyde<\/a><\/span> and other VOCs<\/a><\/span>.<\/p>\n\n\n

Bottom Line<\/div>
Bottom Line: Should you leave the air purifier on all night?<\/div>
I recommend leaving your purifier on while you sleep. In our bedroom tests, after just 80 minutes, the air was just as dirty as it was before the air purifier was turned on.<\/div>
Smart Air<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Here\u2019s a question I often get asked about air purifiers: \u201cI don\u2019t want to hear the fan while I sleep, so can I run my air purifier for an hour and then turn it off before I sleep at night? Or should I sleep with my air purifier on at … <\/p>\n

Read more<\/a><\/p>\n","protected":false},"author":4300,"featured_media":31036,"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":"22322,13071,11976,13492,20657,22029","_relevanssi_noindex_reason":"","footnotes":""},"categories":[17,190,259,313,264],"tags":[272,283,355,351,354],"class_list":["post-7568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-pollution","category-air-purifiers","category-filters","category-formaldehyde","category-indoor-air","tag-air-pollution","tag-air-purifier","tag-co2","tag-night","tag-sleeping","resize-featured-image"],"acf":[],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/7568","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\/4300"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/comments?post=7568"}],"version-history":[{"count":16,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/7568\/revisions"}],"predecessor-version":[{"id":33328,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/7568\/revisions\/33328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media\/31036"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media?parent=7568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/categories?post=7568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/tags?post=7568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}