They are, by DOE definition, capable to remove more than 99.97% of particles that are as small as 0.3 microns. This ultra-compact unit has a unique square design that allows for 360-degree lasko pedestal fans air intake for super-fast purifying performance. The removable and customizable pre-filter is especially useful for houses where pet hair, dust, and dander are frequent.
Even though it was set on Turbo Mode for sixty minutes, in the end, the air quality had been improved by only 89%. Each air purifier had been tested separately for 60 minutes and at top speed. The final score went in favor of Alen FLEX with the 94% of improved air quality, while Blueair had a 92% improvement. As for the basic filtration technology, both air purifiers use a 3-stage filtration system, with a HEPA silent technology in addition to the Blueair 211+. The HEPA silent technology can be turned off, and it serves as a small version of the Ionizer. Alen FLEX comes without this feature, as well as some additional ones.
It’s not best suited for cigarette smoke and strong smells. One common error by air purifier builders, even in the premium price brackets, is neglecting a lights-out switch for bedroom use. This is probably the most unique product warranty I have seen for air purifiers. alen breathesmart However, it is counter balanced by the high initial cost of purchase of the device. For its price range, I was expecting at least some of these features to be available. This is another reason why I consider the BreatheSmart Flex to be an overpriced air purifier.
Not having an activated carbon filter will expose users to gaseous pollutants which cannot be filtered out by their HEPA type filter. To get an activated carbon filter, users have to purchase a higher priced variant which of course costs extra. Dishonest marketing by Alen is one of the biggest reasons I would avoid this brand entirely. Alen also mentions that the BreatheSmart Flex can rooms as large as 700 square feet. In finer print it is mentioned that a 700 square foot room can be cleaned in 30 minutes. The well accepted standard is that an air purifier must be able to clean a room in 15 minutes or lesser to be effective.
If you can only buy one, place it in the room you spend the most time in. We recommend the bedroom as indoor air pollutants can affect your sleep quality. Most air purifiers come with one HEPA filter, but with the BreatheSmart you can choose from four, each designed for specific needs. All come with a pre-filter and activated carbon filter built-in.
If you want to protect you and your family from indoor air pollutants, we recommend the Alen BreatheSmart FLEX Air Purifier. Pink noise reduces jarring noises, which jolt you out of sleep. Such noises include a car horn honking, someone snoring or a door slamming. Thanks to the pink noise, you can fall asleep faster and have a deeper sleep longer. Activated carbon often re-release chemicals after adsorbing.