Air Purifiers Help Treat Sleep Apnea? A CPAP Alternative?

The effects of air pollution on our health are well documented. But the effect air pollution has on sleep and making sleep apnea worse is not talked about enough. So what exactly is air pollution’s effect on sleep apnea? Can an air purifier be used as a CPAP alternative? Air …

Read more

Calculating CADR with airflow and filtration %

How to Calculate CADR From an Air Purifier’s Airflow

CADR tests, used to calculate an air purifier’s effectiveness at cleaning air, are typically used to compare the performance of different purifiers. However, performing a CADR test is not simple: it requires a particle monitor, a sealed 30m3 test lab, and tightly controlled testing conditions. As such, a shortcut to …

Read more

What’s CADR and What’s the Difference With Airflow?

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 …

Read more

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 …

Read more

What Does the Number On My Air Purifier Mean?

What is the meaning of that number displayed on your air purifier? Many popular air purifiers including Xiaomi and Phillips display live air quality readings. But what exactly do these numbers mean and are they even accurate? In this article, we break down everything you need to know about that …

Read more

What Are Ionizer Air Purifiers and Do They Work?

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 …

Read more

Do portable air purifiers work?

Wearable Air Purifier Necklaces: Do They Work?

Small, wearable air purifier necklaces have become popular to protect against viruses and other pollutants. They’re small, lightweight, portable, and fairly cheap. Here’s one personal air purifier on Amazon claiming to eliminate germs, dust, viruses, COVID-19, and more from the air. In the Philippines, President Duterte has been seen wearing …

Read more

xiaomi-automode-feature-image

Why You Should Never Use Your Air Purifier’s Auto Mode

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 …

Read more

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.