Air purifiers have become an obvious for those looking to protect themselves from the COVID-19 coronavirus. That’s not surprising. Data shows that air purifiers can filter COVID-19. In fact, the EPA now suggests portable air purifiers be used to improve ventilation to protect against COVID-19: However, when looking to buy an air purifier, […]
Author: Paddy Robertson
Paddy is the CEO of Smart Air, running operations from Beijing. He has a Masters in aeronautical engineering from Bristol University, UK having specialised in aerodynamics. An advocate for open data, free information and transparent business, he spends his spare time promoting honest business and social enterprise.
What Are HEPA Filters and How Do They Work?
The term “HEPA filter” can be confusing. What does HEPA stand for? What is a HEPA filter made from, and what actually makes it a HEPA filter? What Is a HEPA Filter? “HEPA” stands for “high-efficiency particulate air” (filter). It sounds complicated, but HEPA air filters are nothing fancy. They were invented back in the […]
Can HEPA Filters and Air Purifiers Capture the Coronavirus?
Data shows face masks can protect you from the coronavirus, but how about air purifiers? How effective are HEPA air filters at capturing the coronavirus? Can HEPA Filters Capture and Remove The Coronavirus? To answer this question, we need to first answer if HEPA filters can capture particles as small as the coronavirus. The COVID-19 […]
Why Air Purifier Pre-Filters May Be More Harm than Good
Most purifiers on the market come with a pre-filter. That would make one think that pre-filters must be a good thing, right? However, most purifier companies also love to selling people 6-stage filtration, or no – 7-stage filtration! But the science behind purifiers is surprisingly simple. Two types of filters will protect you against […]
Where Does Bangladesh and Dhaka’s Air Pollution Come From?
Bangladesh’s air pollution levels reached an average of 86 micrograms in 2019. That means Dhaka, Bangladesh’s pollution levels are almost 9 times the WHO safe limit. With such high pollution levels, many may wonder where Dhaka and Bangladesh’s pollution actually comes from. Learn more: Overview of Bangladesh & Dhaka Air Quality » The Three Main […]
Bangladesh & Dhaka Air Quality – 2020 Update
Reports of Dhaka and Bangladesh’s air pollution being the ‘worst’ in the world feature often in the news. But how much of a problem is air pollution in Bangladesh and Dhaka, really? This article provides an overview of Bangladesh’s air pollution: how bad is Bangladesh and Dhaka’s air pollution and AQI, where does it […]
Medical-Grade Air Purifiers | The Real Deal
Medical-grade air purifiers and medical-grade HEPA filters are now everywhere. A google search for medical grade air purifier returns millions of results. And here’s one company selling what it claims to be a medical-grade air purifier. But what actually is a medical grade air filter? Let’s find out. Medical Grade Air Purifier Standards In […]
How Effective Are Air Purifiers for Virus Protection?
Peer-reviewed scientific research has shown conclusively that HEPA air purifiers capture over 99% of viruses, even viruses as small as the coronavirus. However, it’s important to remember that air purifiers are not a silver bullet for virus protection. Things to Look Out For When Using a HEPA Purifier to Protect from COVID Here are the […]
Dyson Pure Cool Air Purifier Test: Shockingly Bad | Review
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 clean air as a $20 […]
Three Ways to Improve Indoor Ventilation to Combat COVID-19
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 […]
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