HEPA filters are common in air purifiers and vacuums. Here's more on what they do, and whether they're worth prioritizing in ...

For a step up, consider a pleated filter. These have a MERV rating between ... which have MERV ratings of 17 to 20 and are ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at its highest speed. A model that scores well for dust removal should perform ...