{"id":527,"date":"2019-01-28T17:42:28","date_gmt":"2019-01-28T17:42:28","guid":{"rendered":"https:\/\/smartairfilters.com\/mn\/?p=527"},"modified":"2019-06-30T13:34:59","modified_gmt":"2019-06-30T13:34:59","slug":"purifiers-useless-windows-opened","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/mn\/en\/blog\/purifiers-useless-windows-opened\/","title":{"rendered":"Are Air Purifiers Effective If Windows are Opened?"},"content":{"rendered":"

Tests show that keeping the doors and windows closed will keep particulate levels at\u00a0<\/span>50% less than outdoor air on average<\/a>. But some people really want to keep their windows open. For some people, it\u2019s an old wive\u2019s tale that windows must be kept open. For others, it\u2019s a way to reduce chemicals coming from new furniture or recent remodeling.<\/p>\n

Can we have it both ways?\u00a0Or air purifiers\u00a0useless with when our windows are open?\u00a0CK from the Smart Air team put this question to the test by running the\u00a0<\/span>DIY Cannon\u00a0<\/a>air purifier in the 12m2<\/sup><\/span>\u00a0<\/span>Smart Air testing room six times with the window open and closed.<\/p>\n

<\/h3>\n

The Test<\/strong><\/h3>\n

The effect of having your window open will be more prominent when outdoor air is hazardous, so\u00a0CK chose two days when outdoor air was bad (February 14th and 15th) for his tests. During these two days, Beijing\u2019s AQI\u00a0averaged 239 and 290 according to the US Embassy.<\/p>\n

 <\/p>\n

\"\"\"\"<\/p>\n

To keep the baseline level of pollution consistent across tests, CK opened the window to let in outdoor air until it reached the outdoor level.<\/p>\n

When the particle count reached the\u00a0same level as\u00a0outdoors,\u00a0CK ran the Cannon on high for 20 minutes.\u00a0He ran three tests with the windows open and three tests with the window closed.<\/p>\n

\"Air\u00a0\"air<\/p>\n

<\/h3>\n

Results<\/strong><\/h3>\n

With the window closed, the Cannon reduced particulate by an average of 90% after 20 minutes. With the window open, the Cannon air purifier managed just a 60% reduction in particle count.<\/p>\n

\"Air<\/p>\n

\"Window<\/p>\n

The data shows that it\u2019s clearly better to close the windows with running your air purifier. No shocker there! But here\u2019s the more interesting part: even with the windows open, it\u2019s still possible to significantly reduce indoor particulate by turning on an air purifier.<\/p>\n

 <\/p>\n

Bottom Line<\/strong><\/h3>\n

Closing\u00a0your windows and turning on your purifier\u00a0will give you the lowest PM2.5 levels in your home. That\u2019s obvious.<\/p>\n

However, if you have to balance the PM2.5 threat against high levels of VOCs or CO2 indoors, it is possible to get some ventilation AND significantly reduce PM2.5 levels indoors with your window open and purifier on.<\/p>\n

One suggestion is you equip yourself with a super-charged purifier such as the\u00a0<\/span>Smart Air Blast or Blast Mini<\/a>. Having your windows open whilst running a purifier like this can give you a good balance between low PM2.5 levels and low VOC or CO2 levels!<\/p>\n

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

Tests show that keeping the doors and windows closed will keep particulate levels at\u00a050% less than outdoor air on average. But some people really want to keep their windows open. For some people, it\u2019s an old wive\u2019s tale that windows must be kept open. For others, it\u2019s a way to … Read more<\/a><\/p>\n","protected":false},"author":4580,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-527","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/users\/4580"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/comments?post=527"}],"version-history":[{"count":3,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/527\/revisions"}],"predecessor-version":[{"id":712,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/posts\/527\/revisions\/712"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/media?parent=527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/categories?post=527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/mn\/en\/wp-json\/wp\/v2\/tags?post=527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}