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Tag: longevity

HEPA Longevity Test: Day 200

Saturday November 29th, 2014Wednesday November 28th, 2018 Thomas Talhelm Leave a comment

  One of the biggest questions when I started doing the DIY was how long the HEPAs last. Rather than just give people a nice-sounding answer, I wanted to see what the data says, so Gus has been dutifully turning on his Original DIY every day in his 12.3m2 Beijing bedroom and tracking how effective it is […]

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How Long do Smart Air HEPAs last? Longevity Test Day 130

Friday July 11th, 2014Wednesday June 13th, 2018 Thomas Talhelm Leave a comment

How long do Smart Air HEPAs last? My quest to give a solid empirical answer has now completed 130 days! Gus is still dutifully tracking the effectiveness of the HEPA he’s been using in his bedroom since January (with a trip to the US in the middle), calculating the percent reduction in particulates every night. […]

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Q&A: How long can HEPA filters last?

Saturday August 10th, 2013Thursday June 14th, 2018 Thomas Talhelm Leave a comment

passport4adragon 提问: 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 I run the purifier every […]

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About Smart Air

Smart Air is a social enterprise based in China, India, Mongolia and the Philippines that creates simple, no-nonsense air purifiers and provides free education to combat the impacts of air pollution. More about who the heck we are

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