corsi rosenthal box

Corsi-Rosenthal Box DIY Purifier: 4 Things to Know

A fan, furnace filters, and some duct tape–can air purifiers be that simple? Meet the Corsi-Rosenthal Box (CR Box) DIY air purifier. The Corsi-Rosenthal Box is a powerful, low-cost air purifier that you can put together on the cheap. At Smart Air, we’ve been building, testing, and teaching people how …

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How to Make a DIY Air Purifier

How can we make a homemade DIY air purifier? Air purifiers can be extremely expensive. But they don’t need to be. After researching how different air filters work, I concluded that a HEPA filter is all that’s needed to make an effective air purifier. Given that most air purifiers sell …

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The Best DIY Air Purifiers in the UK

A lot has been going on with DIY air purifiers in the UK since we first created our DIY purifier. In this article, we share a few different DIY air purifier designs that can be made in the UK. Below are some of the DIY designs created by our UK …

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Can DIY masks filter out viruses and coronavirus

Do DIY Cloth Masks Protect Us From COVID-19?

DIY cloth masks to protect against viruses sounds like a crazy idea. Data shows masks work incredibly well, and they’re also really cheap. Surgical masks cost a few pennies, and they’re capable of filtering out 80% of particles down to 0.007 microns (14 times smaller than COVID-19). However, the COVID-19 …

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Duct-Taped $70 DIY Air Purifier Outperforms $1,000 IQ Air

New head-to-head test data from a citizen scientist finds that a simple, taped-together DIY air purifier effectiveness is higher than a market-leading Swiss air purifier, IQ Air. This data adds to an accumulation of data suggesting that effective air purifiers need not be expensive. The Setup The underlying science of …

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Paper towel test at capturing virus-sized particles

Are Paper Towel Masks Effective at Blocking Viruses?

In a recent study, researchers tested household materials that could be used to make DIY masks, but they left out one common material—paper towel masks (also called “kitchen paper”). Could paper towel be an effective material for making homemade masks in times of crisis and shortages? Smart Air Engineer Paddy …

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Best material fabric for making DIY masks to capture viruses

What Are the Best Materials for Making DIY Masks?

With masks sold out during the coronavirus outbreak, many people will have to make do with what some scientists have called “the last resort”: the DIY mask. Data shows that DIY and homemade masks are effective at capturing viruses. But if forced to make our own mask, what material is …

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Do Air Purifiers Remove PM2.5?

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 …

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Smart Air is a social enterprise that creates simple, no-nonsense air purifiers 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.