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Search Results for: How long do Smart Air HEPAs last? At least 90 days


How Long Do Smart Air HEPAs Last? At Least 90 Days

2014-05-202020-07-15 Thomas Talhelm 5 Comments

The most frequent question people ask me these days is: how long does the HEPA last? This question is important because replacement HEPAs are the biggest long-term cost of clean air. IQ Air charges $370 for its filters. So if you have to replace the HEPA every two weeks, the DIY might not save you money in […]

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How Long Do Smart Air HEPAs Last? Longevity Test Day 130

2014-07-112020-07-15 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?

2013-08-102020-07-15 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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