About Overall score for the Alen Breathsmart is mainly ... plus quietness for room purifiers. Dust/pollen/smoke removal: How well models cleared air of fine clay dust and cigarette smoke ...

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

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 ...

The first of the top five brands is Alen, an Austin, Texas-based company focusing solely on air purifiers. Alen places behind the other elite air purifier brands for one reason: reliability.

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

The Alen BreatheSmart 45i is a great all-rounder ... While it's far from the priciest air purifier here, be aware that different customization options will incur an extra fee.