Alen
BreatheSmart Flex
Based on 19 Reddit mentions
$349.00
We may earn a small commission.
Most discussed features
Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
Right now it’s 42 degrees and 40 mph winds and “feels like 26 degrees”. Is this the new normal for Chicago in January?
I got the Alen Breathesmart Flex with the Fresh filter that has the most activated carbon in it. I got this one because it has decent amount of activated carbon in its filter, it was aesthetically pleasing, and I could buy it with FSA money. The other models are more expensive and have things I don’
...let-chicago-prosper in r/AskChicago
January 10, 2026 3:34 PM
2
Recommendations for a purifier that will run 24/7
Just purchased a couple Alen Flex machines after loads of research. Didn't feel I needed all the bells and whistles that come with newer models. It is being phased out but uses the same filters as 45i, the lifetime warranty was a big plus.
Magic32101 in r/AirPurifiers
December 5, 2025 5:17 PM
3
Coway Airmega 400 giving me headaches and vision issues? Is it the Green HEPA filters or do I need to "air out" the machine before using?
Returned it. I got an Alen flex purifier instead and it’s great! I need up 3 refinished for only $200 total and they work great!
pssgetti_monster in r/AirPurifiers
December 12, 2025 12:27 PM
1
NuWave Oxypure experience
A lot of air purifiers under 200 dollars or so might break within a year or two. They dont make things like they used to. (The warranty is often only 12 months so that should tell you something.) I've had multiple brand purifiers fail or have problems within 6-14 months. I don't think it is unique t
...Person51389 in r/AirPurifiers
January 16, 2026 2:30 AM
1
Do any models <$300 mitigate smells at all?
Just spend another 50 bucks and you can get an Alen Flex. Or a RIA Breezeguard (370) Most normal air purifiers have white filters that filter dust + particles. Odor molecules are different so other methods will be used to capture odors. (I also use moisture bags + have a carbon filter behind box fan
...Person51389 in r/AirPurifiers
March 1, 2026 5:19 AM
1
Looking for the best air purifier I can pick up at a physical store. Ohio USA
Alen Air all the way. Tried just about every purifier sold From Target, Walmart, Kohls, Home Depot, Best Buy, Lowe’s, Menards… Almost all went back Shark used to be good, but their newer filters smelled like chemicals and they were super loud. Germ Guardian was ok, but quality dropped. Dyson is a jo
...IDontLikeYourToan in r/AirPurifiers
May 2, 2026 3:12 AM
1
Air purifier for 10x12 nursery
I have the Alen 25i in my office and would also be great for a small nursery. Only 40 db at its highest setting which is great for babies since you want to keep it under 50 db. I also really like how it sounds. A 35i or flex would also be a great choice. I like the flex because it’s a 45i without al
...NumerousAssumption47 in r/AirPurifiers
January 23, 2026 3:49 AM
1
Air Purifier for Odor Removal
Alen Flex is what I got primarily for odors, but it's around 350 range I think. But it has a lifetime warranty you will end up saving money probably as others will break after some years. (Lifetime warranty if you stay in the filter replacement program, you can do I think every 9 or 12 months, and t
...Person51389 in r/AirPurifiers
February 28, 2026 9:43 PM
1
I need help finding the right air purifier.
Yes, sleeping next to a litter box seems like a bad idea imo. OP I would also advise to move the litter box as far as possible, then put air purifier between you + the litter box so it sucks up that related air before it gets to you. Maybe even a partition of some sort could help angle air to keep i
...Person51389 in r/AirPurifiers
March 4, 2026 9:32 PM
1
Best purifier under $300 for extreme dust allergy? (Small bedroom)
I went with this one for my daughter’s bedroom - she has severe seasonal and animal allergies. It’s currently $249 instead of $349 to boot. https://alen.com/products/alen-breathesmart-flex-hepa-air-purifier
blounsbury in r/AirPurifiers
November 5, 2025 2:42 AM
1