About Overall score for the Alen T500 Pure + Black ... plus quietness for room purifiers. Dust/pollen/smoke removal: How well models cleared air of fine clay dust and cigarette smoke; performance ...

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 ...

Read our full review: Levoit Core Mini Air Purifier The Alen BreatheSmart air purifier is a beefy machine all the way around. It is the heaviest model we tested (at 27 pounds), and its dense high ...

and Alen. In addition, very few air purifiers needed repairs, according to our survey respondents. Just 1 percent ever took ...