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 ...

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 ...

These models can help clear harmful particulates. Plus, other steps you can take to improve indoor air quality.Left to right: ...

It needs one with extra strong capabilities like this one from Alen. The air purifier can clean 1300 square feet of space every 30 minutes, making sure even your largest rooms have the best ...

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.