A new analysis of air quality data from Smart Air helps explain why winter brings PM2.5 pollution to more than 10 times the World Health Organization’s annual limit. Smart Air analyzed US Embassy data for fine particles (PM2.5) data for New Delhi, Kolkata, Mumbai, Chennai, and Hyderabad. We took the data from the past […]
Clean Air Blog • Page 1
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? […]
How Long can the Coronavirus Survive on HEPA Filters?
Air purifiers with HEPA filters are highly effective at filtering out viruses such as the COVID-19 coronavirus. But viruses can remain on surfaces for scarily long periods of time. When thinking about viruses stuck in an air purifier’s HEPA filters, that sounds scary. It’s also led to incredible-sounding headlines about how long viruses last. But […]
Dyson Got These 3 Facts Wrong about CADR | Review
I’ve always admired Dyson’s engineering-first approach to product design, ever since my mum brought home our first Dyson bagless vacuum cleaner! When Dyson launched their Dyson Pure Cool Air Purifier, I was excited to see what new tech or super-efficient design they would bring to the show. But what I found was that Dyson hadn’t […]
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 […]
How do UV Light Air Purifiers Work and Can They Kill Viruses?
Air purifiers with UV lights have sprung up as a potential solution to disinfect the coronavirus. Also called ‘sterilization lamps’, they are advertising as being able to kill 99.9% of viruses. But are UV light air purifiers actually able to protect against COVID-19 and other viruses? UV Light Air Purifiers on the Market Today Terms […]
How to Increase the Dose Your UV Light Can Deliver
In the other article‘Common UV Lights Aren’t Great at Killing COVID-19’, we explained how much doses do we need to kill coronavirus. Also, we talked about how UV-C light kills the virus. Also, the UV light we can find in the market is too weak to kill the coronavirus. So, if we can’t purchase super […]
What is UV Light and How Does it Kill Viruses?
UV light, or ‘ultraviolet light’, is a form of non-visible electromagnetic light. The main source of UV is the sun. There are three types of UV light: UV-A, UV-B, and UV-C. They’re differentiated by the wavelength of the light, with UV-A light has the largest wavelength, ranging from 315-400nm. UV-C light has the shortest wavelength, […]
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