Dyson Pure Cool TP04 Real-World Test Finds 49% Effectiveness

New tests of the Dyson Pure Cool TP04 air purifier show it reduced indoor PM2.5 levels pollution by just 49% in a typical room. This data adds to a growing amount of evidence showing the Dyson air purifier underperforms purifiers far cheaper than it. Dyson Pure Cool TP04: Marketing Hype … Read more

Dyson Pure Cool air Purifier Tower CADR Review

Dyson Pure Cool Air Purifier Review: Shockingly Bad

Dyson’s Pure Cool air purifier looks impressive. However a review of its clean air rating (CADR) reveals this filter does a poor job of providing clean air – the Dyson TP05 Pure Cool’s CADR comes in at just 164m3/hr. That means the Dyson Pure Cool air purifier out as much … Read more

HEPA Lifespan Test Filter Air Purifier

HEPA Longevity Test: Day 200

One of the biggest questions when I started doing the DIY was HEPA lifespan–how long do 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 … Read more

Can homemade DIY and surgical masks protect against the coronavirus

Can Masks Capture Coronavirus Particles?

With the outbreak of the coronavirus, many people are wondering if masks capture coronavirus particles. It’s a lot to ask billions of people around the world to become mask experts overnight. There is a lot of conflicting information. Do surgical masks capture coronavirus particles? Media outlets like US National Public … Read more

Can air pollution masks help with India's air pollution?

Do Masks Really Work in India’s Air Pollution?

Every year when winter rolls around, a billion people in India are left breathing toxic, polluted air when on the streets. Be it in Delhi, Mumbai, Kolkata or Hyderabad, everyone is forced to become experts in a complicated scientific question to cope with the pollution: Do air pollution masks work? … Read more

xiaomi-automode-feature-image

Why You Should Never Use Your Air Purifier’s Auto Mode

Many air purifier companies add fancy features to help market their products.  One of these features is an “auto mode”, also called “smart mode”.    The idea behind smart purifiers’ auto mode is simple. The purifier has a small air quality monitor inside. When the air is bad, the purifier … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifier and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.