Plus, other steps you can take to improve indoor air quality. Left to right: Air purifiers from Alen, Blueair, and Coway. By ...

The size of the room best suited for the air purifier based on Consumer ... and clean or replace its filter(s). About Overall score for the Alen Breathsmart is mainly how well the model removed ...

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

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models ...

Alen Breathesmart 45i: This Alen air purifier relies on a medical-grade H13 true HEPA filter, which did an outstanding job of removing particulate matter from our test room. This model is also ...