Alen
BreatheSmart Flex
Based on 28 Reddit mentions
$349.00
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Most discussed features
Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
ALEN Air purifier, filter replacement.
I'm sticking with Alen and their filters. I like the lifetime guarantee. I will watch what happens with this lawsuit though. FYI, it's only the 45i and flex that are being addressed in this class action suit, not sure what that means, but I would think they would include all models if they had teste
...FairManner1292 in r/AirPurifiers
March 21, 2026 7:53 PM
3
Looking for a basic, no frills purifier
The Flex model has carbon, I have one. You choose the filter you want. So you get their best filter, I think 90 bucks at 450i size, has carbon + more material than most affordable hepa units. 60 dollars is just hepa. They have a middle one in between for like 70 or 80. So for good carbon, get the be
...Person51389 in r/AirPurifiers
August 10, 2026 5:28 AM
2
My first air purifier for my living room! Help!
I would look into Alen 45i Flex, or units from Winix, Levoit, or Coway. Alens are quiet and good for both VOCs + particulates, with their best filters, and come with a lifetime warranty if you stay in the filter replacement program. (I think 90 bucks every 9 or 12 months, your choice.). However if y
...Person51389 in r/AirPurifiers
May 10, 2026 1:20 PM
2
Is the Alen BreatheSmart FLEX Pure 4 any good?
I work for Alen and the flex is a solid unit. No smart features, just plug it in, turn it in and let it run. They're pretty bulletproof.
TexanInExile in r/AirPurifiers
December 3, 2025 7:23 PM
2
Best air purifier for allergies that'll actually last?
Alen 45i Flex, so Alen has a lifetime warranty if you stay in filter replacement program. One of the only brands in the industry with a lifetime warranty. It doesn't move air super-fast though, but slow and steady. Aldo I think 400-450 with the Flex being 50 cheaper with no smart features + no ioniz
...Person51389 in r/AirPurifiers
July 30, 2026 4:24 PM
1
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