When buying an air purifiers, the terms ‘airflow’ and CADR are often used interchangeably to describe an air purifier’s performance. But what’s the difference between CADR (clean air delivery rate) and airflow? Are they the same thing? Or which one – CADR vs. airflow – should be used when buying …
What are ionizer air purifiers and do they work? This is an important question because ionizer air purifiers are all over the place. For example, I was at a friend’s apartment in the US, and I saw his tower fan air purifier had an ionizer button on it: Ionizer air …
Many air purifier companies add fancy features to help market their products. One of these features is an air purifier auto mode, also called “smart mode”. The problem? Test data shows an air purifier’s auto mode routinely fails, leaving users with dangerous air. The idea behind smart purifiers’ auto mode …
Air purifiers work best in a closed room environment, but this makes some people worry that closing windows starves us of oxygen. Worried how long you can survive in an airtight room? Well, recent tests in a real apartment — with as many as seven people in a small room …
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 …
It turns out, the difference between N95 and KF94 masks is minor for the factors that most users care about. KF94 is the “Korean filter” standard similar to the US N95 mask rating. Let’s dive into the differences: N95 vs KF94 . Note, there is no “N94” or “K94” mask …
With such similar-sounding names, it can be confusing to understand the difference between N95 and KN95 masks. What are KN95 masks, and are they the same as N95 masks? This handy chart explains the similarities and differences between N95 and KN95 masks. N95 vs. KN95 Comparison Chart Source: 3M – …
Smart Air’s analysis of Bangkok’s PM2.5 data (what is PM2.5?) finds Bangkok air pollution source varies systematically by season and time of day. Bangkok Average PM2.5 First, some basics. In 2020, Bangkok averaged 21 micrograms of PM2.5. That puts Bangkok just over two times the WHO annual limit. (Recently, the …
Choosing which air purifier to buy can seem complicated. With thousands of air purifier models to choose from, how to choose? In this 2022 air purifier buying guide, we take you through the four steps on how to choose an air purifier. What’s the Best Air Purifier? The best air …
Over this last Christmas, I was at home on the couch, and my dad asked me if I’ve seen this new Molekule air purifier he saw an ad review for. He asked because I’ve been building and testing DIY air purifiers ever since a Beijing airpocalypse in 2013 had me …
