Interest in air filters and purifiers is spiking ... NPR has previously posted a design and guide to building an air purifying cube known as a Corsi-Rosenthal Box, using four 20-inch MERV 13 ...

Essentially, the higher the CADR rating, the more effective it is in removing pollutants, allergens and cleaning your air ...

The best air purifiers can help filter fine particles, gases and other pollutants from the air you breathe. See our top picks ...

The very best air purifiers for smoke are designed to filter out harmful microscopic particles, helping you breathe better.

Interest in air filters and purifiers is spiking in Southern ... NPR has previously posted a design and guide to building an air purifying cube known as a Corsi-Rosenthal Box, using four 20-inch MERV ...