BreatheSmart Flex

Alen

BreatheSmart Flex

26 positive 0 neutral 2 negative

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

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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

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Person51389 in r/AirPurifiers

August 10, 2026 5:28 AM

2

Will an air purifier help with stale air in a poorly ventilated apartment?

First, I want to start by saying I feel your pain and wish you well. In a space that small, with your budget, I would say table/pedestal fans and paying close attention to cleaning are going to make a much bigger difference. I’m not saying you’re dirty or you don’t clean, but oils from cooking can b

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IDontLikeYourToan in r/AirPurifiers

July 12, 2026 4:54 PM

2

Need air purifier safe around bunnies -- AirDoctor 3500?

Unfortunately I believe the AirDoctors also have an ionizer that can be toggled on/off. (According to Google search, and the panel I see.). So given the risk of even accidentally turning it on....(And forgetting/not knowing to turn it off...) id also consider avoiding this unit for your particular c

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Person51389 in r/AirPurifiers

April 29, 2026 11:19 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

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Person51389 in r/AirPurifiers

May 10, 2026 1:20 PM

2

AirDoctor versus Coway versus Levoit

If you can afford 800 then probably consider AustinAir, people on here seem to hold it in high regard and one of their good units is 750 I think. I could never afford that, and have never had Air Doctor,.so I can't say anything on that. I do love my Levoits but they are good affordable units, that l

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Person51389 in r/AirPurifiers

March 2, 2026 1:39 AM

2

Did I buy the wrong air purifier?

I recently purchased 3 different levoit air purifiers from Amazon for my mom's place and they were all horrible. Ive been testing them out for about a month. My allergies became worse. They were also advertising as a true hepa when they are not and they are being sued for that. I went and ordered th

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some_questionz in r/AirPurifiers

September 30, 2025 5:06 PM

3

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

Any recommendations for an air purifier?

We have 3 of the alen flex air purifiers. We have been really happen with them.

BubbleohH7 in r/UninfluencedReviews

October 5, 2025 7:17 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

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