Over this last Christmas, I was at home on the couch, and my dad asked me if I’ve seen this new Molekule air purifier he saw an ad review for. He asked because I’ve been building and testing DIY air purifiers ever since a Beijing airpocalypse in 2013 had me coughing …
New Dyson Pure Cool TP04 tests show the purifier reduced indoor PM2.5 pollution levels by just 49% in a typical size room. This data adds to a growing amount of reviews and tests showing the Dyson air purifier underperforms purifiers far cheaper than it. Dyson Pure Cool TP04 Test: Marketing …
Empirical data shows that air purifiers are great at cleaning air, but do they dry out the air and lead to other health problems? For me, dry air is mostly just a comfort issue. But for some people, dry air can exacerbate health problems like allergies and bronchitis. Do HEPA …
Why does Smart Air’s latest air purifier, The Sqair, use a weaker filter–an H11 HEPA compared to the H12 and H13 HEPA filters out there? Tests of different filter grades revealed that weaker filters sometimes make stronger purifiers. Of course, purifier companies like to market their filters as top grade. …
When I was coughing through Beijing’s airpocalypse and thinking about buying an air purifier, I wanted to know something first–do air purifiers really remove PM2.5? I wondered because I saw lots of air purifier tests on pollen, but pollen is generally 10 microns or larger, whereas I was really concerned …
Using actual air purifiers test data on is the best way to cut through the misleading marketing claims purifier companies make to try to get us to pay more money for clean air. For that reason, I’m always on the look out for good test data. Data is power. …
I started thinking about finding the best air purifier for my home because I was living in Beijing when the “airpocalypse” struck. I had a cough I couldn’t shake for weeks, so I started doing research into air purifiers. Unlike another answer here, I wasn’t concerned about allergens …
When we think about harms of air pollution, we often think about the health impacts on infants and the elderly. But does air pollution affect the health of young, healthy people? And if so, can air purifiers help reduce the health impacts of air pollution? Do purifiers have real health …
Data and Test Details Test Methods: These tests were identical to my previously published tests, details of which can befound here, here, and here. Original Data: The original data for all 13 tests is available as an Excel file here Average Outdoor PM2.5 During Tests It’s important to note the average outdoor PM2.5 during …
A few months ago, Smart Air tested the Laser Egg, the Node, and the Dylos against official PM2.5 readings. The results were way better than I expected! All three machines correlated r = .90 or higher with the gold-standard numbers, which is very high. But this test may have exaggerated its …
