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.
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.
But any 270 CADR machine is going to make noise, just that much air rushing will be pretty noticeable. I would rate the Breathesmart several points higher if the standard alen breathesmart filter carried some carbon, as Blueair finally did with their standard filter. So Alen CEO Peter Mann cleverly re-targeted the premium space with a Blueair-like design.
The first 3 settings that you’ll be using mainly make it a perfect choice for most bedrooms. Even at its highest speed level, the Flex is much quieter than a normal conversation which is rated at 60 dB. Alen says that this air purifier can comfortably handle large rooms up to 700 sq.ft. Going by its CADR and ACH ratings, this unit will take slightly over an hour to effectively clean the air in such a big room- assuming that it has a ceiling height of 8 ft. This panel has everything you need, though, including a 4-speed motor control button and a timer.
The BreatheSmart comes in different colors and offers different filters to meet the unique preferences of different users. In our analysis of 65 expert reviews, the Alen BreatheSmart Air Purifier placed 6th when we looked at the top 17 products in the category. Along with our in-house experts, our team analyzes thousands of product reviews from the most trusted websites.