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.

Filtered by featurefilter qualityClear feature

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

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

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’

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let-chicago-prosper in r/AskChicago

January 10, 2026 3:34 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

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Person51389 in r/AirPurifiers

July 30, 2026 4:24 PM

1

Looking for a basic, no frills purifier

Alen 350i or 450i, the 450i Flex has no ionizer and no smart features, and is 50 dollars cheaper. The 350i might be big enough, definitely for smaller room. So they have more carbon in them than most hepa based units, if you get their best filter. However, VOC focused in will still have far, far mor

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Person51389 in r/AirPurifiers

August 9, 2026 7:17 PM

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

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Person51389 in r/AirPurifiers

March 1, 2026 5:19 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

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Person51389 in r/AirPurifiers

February 28, 2026 9:43 PM

1

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