Data compiled by the world health organization (WHO) shows that poor ventilation can lead to an increase in virus transmission. As such, improving ventilation indoors should be considered an important step in reducing the spread of viruses such as COVID-19. This article covers three simple steps to improve indoor ventilation and lower the risk of […]
Category: Indoor Air
Recent Indoor Air Articles:
Is an Air Purifier Needed for Every Room of a House?
Several people have asked me if they can use a purifier in the living room to clean their entire apartment. The benefit is that it’s easier to use just one purifier. Plus, noise isn’t an issue if the purifier is in the other room. But does it actually clean the air in the entire apartment? […]
Can Opening Windows & Doors Reduce COVID-19 Transmission?
Data shows that having good indoor ventilation can reduce the chance of virus transmission. Armed with that knowledge, can something as simple as opening a window be effective solution to fighting COVID-19 and reducing virus transmission indoors? Recommended Air Changes Per Hour Before we can say how effective opening windows really is, we […]
Can HEPA Filters Release Dirty Particles Back Into the Air?
HEPA filters are great at filtering particles such as dust, PM2.5 and PM10. They also do an incredible job of capturing nanoparticles including viruses and bacteria. What HEPA filters don’t do though, is destroy the particles. This has lead to a lot of marketing hype and confused air breathers. Some companies claim they have superior […]
These are the Recommended Ventilation Rates for Offices, Homes, Schools and Shops
Data shows that improving indoor ventilation can reduce the risk of virus transmission, and is recommended by the CDC. But to what level of ventilation is ‘acceptable’ or ‘safe’. How much should it be increased by? In this article, we’ll cover the recommended ventilation rates for offices, homes, schools and hospitals. Recommended Room Ventilation Rates […]
What Are Ionizer Air Purifiers and Do They Work?
Smart Air is a social enterprise providing free education to combat the impacts of air pollution and creator of the world’s most cost-effective air purifier. The other day, someone on Quora asked whether ionizer air purifiers actually purify the air. This is an important question because ionizers are all over the place. For example, I […]
Can Plants Filter Out PM2.5 Air Pollution From Our Homes?
Can plants be useful substitutes for air purifiers? Data shows that plants aren’t great at removing VOCs from the air. Despite a NASA study showing that some plants like ivy, spider plants, aloe vera and bamboo palm could reduce VOC levels, real-home data shows otherwise. But how well can plants filter out particles from the […]
How Long Does the Sqair’s HEPA Filter Last?
After launching the world’s most cost-effective purifier (the Sqair), we started testing the HEPA lifespan. I’ve long been skeptical of the lifespan numbers purifier companies give because (1) they provide no empirical justification for the number and (2) they give the same numbers in Switzerland or Delhi. Yet clearly the HEPA would last less time […]
Simplifying Clean Air with One Less App
Here’s a radical idea: having one more app on my phone won’t make me happier. It feels like the world is rushing to app-ify everything these days. GPS and texting made my life a lot easier, but there’s a limit. The moment I saw this coffee mug, I knew we reached the limit. This mug […]
Renting Air Purifiers is More Expensive Than Buying Outright
Many purifier companies offer air purifier rental services as part of their business model. It sounds great: they offer to rent you an air purifier short term, and you save money in the process. This simple analysis will show why that system is flawed, and how renting air purifiers is just another way to make […]
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