Air purifiers are devices that remove pollutants from the air and improve air quality. Air purifiers do this either mechanically, using air filters, or using ionizers or chemical reactions. Read more to learn about air purifiers, how to choose the best air purifier, and how they can protect against viruses, wildfire smoke, air pollution and PM2.5.
Portable air purifiers can make a big difference in improving air quality around you, especially in shared public spaces. But with so many options available, how do you choose the right one? Here are the key factors to consider when selecting a portable air purifier that meets your needs. 1. …
Laminar airflow air purifiers have caught people’s attention based on the idea that laminar flow can make portable air purifiers better at preventing infection. The logic is that laminar flow prevents nearby air from being caught up with the clean air coming from the purifier. But can small purifiers produce …
The QT3 is a small, portable air purifier designed to provide a stream of clean air on the go. Even though the QT3 is not designed for cleaning entire rooms, our tests show it is effective at cleaning small rooms up to 15 m2. That raises the question, is the …
Companies sell activated carbon filters (also called “charcoal filters” or “carbon air filters”) to remove chemicals like formaldehyde and benzene, but does carbon really work to remove VOCs? The Smart Air lab put real-world carbon air filters to the test. Who Needs Carbon Filters Anyway? I wrote early on that …
While Dyson’s Pure Cool air purifier looks impressive, a closer examination of its Clean Air Delivery Rate (CADR) exposes a rather bad performance. The Dyson TP05 Pure Cool passed a mere 164m³/hr in CADR. That means the Dyson Pure Cool air purifier out as much clean air as a $20 …
“Where should I place my air purifier” is a common question people have when getting an air purifier. Does an air purifier’s position affect its performance? Is it best to put an air purifier next to a wall? Is it better to put it close to me? This post provides …
Can air purifiers be made from just a fan, furnace filters, and duct tape? Introducing the Corsi-Rosenthal Box (CR Box) DIY air purifier. This is an effective, budget-friendly air purifier that you can put together with low cost. At Smart Air, we’ve been creating, testing, and instructing people on DIY …
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 …
As winter arrives, many people get colds, flu, and other respiratory infections. But why do we get sick more often during these colder months? Research helps explain how cold weather can weaken our immune defenses. Problem #1: Cold Air Our nose is the primary entry point for respiratory viruses and …
The boring answer is “it depends on your filter,” but here are three much more useful insights I’ve learned from actually testing HEPA lifespan: I’m not an expert in air pollution. I was just a poor grad student living in Beijing, and I started making DIY air purifiers to cope with one …
