Alen
BreatheSmart 45i
Based on 54 Reddit mentions
$449.00
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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
Winix C545 Bearings (2021 Build Year)
Most under 200 dollar range purifiers just are not built to last long on general. I suggest checking the warranty before buying...and most...come with a 1 year warranty. Ive had units break within 6 months and a few more break a little over 1 year. Almost as if...they are made to just last a year or
...Person51389 in r/AirPurifiers
March 18, 2026 12:52 PM
3
Looking for air purifier for cat smell
Purifiers under 200 wont do much for odors unfortunately. Or not for very long. You need thicker filters with black carbon pellets -these absorb odors. The normal white filters in most purifiers just capture particles. Does nothing for odors. Under 200 dollar units will fair chance have a thin carbo
...Person51389 in r/AirPurifiers
March 17, 2026 4:42 PM
3
Dyson Purifier Big+Quiet Formaldehyde for hayfever
Good brands with affordable units are Winix, Levoit, Coway, Alen, and many more. A Levoit Core 600 for instance is around 280 dollars and does 350 range CFM...almost double the Dyson for 1/4th the cost. Winix + Coway have great units too. (Coway used a fungicide/pesticide on the filters for antibact
...Person51389 in r/AirPurifiers
May 2, 2026 11:33 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
Allergies bad … impulsively purchased this purifier
Right, so I don't know your budget, but I believe a CR Box with 400ish CFM would give you around 5 air changes per hour...for borderline excellent air. (4.8 is good, 6 is excellent.) So you want to try to get I believe around 400 or even 500 CFM if you want excellent. A 280 dollar Levoit Core 600 do
...Person51389 in r/AirPurifiers
April 28, 2026 3:41 PM
2
Cat proofing airfanta 3pro?
I definitely do not want any cats to be harmed. But you could try gluing some wooden poles/stakes (soft/flat or rounded on top) and just glue them on top so a cat can't sit there. One easy way is a cheap 20 dollar plastic table furniture, as they come with like 8 white (or whatever color) plastic sp
...Person51389 in r/AirPurifiers
March 10, 2026 11:30 AM
2
Air purifier to address upper airway resistance during sleep?
I run my Alen on high. It's still very quiet. Is it not prudent to not comment a lot on a unit we don't have much first hand knowledge on, yes ? Alens have a lifetime warranty. Quiet, + energy efficient. And great for odors+VOCs. I don't know (any ?) other brands units that offer a lifetime warranty
...Person51389 in r/AirPurifiers
April 3, 2026 10:32 AM
2
Are these levoits enough for my needs and are their speciality filters worth it?
Levoits are great. I would not get the shark. Winix is also great, as far as I know. In terms of the filters, I havent seen testing or anything on the different filters. I use the pet hair ones when I can find them cheap. They should be a little better at getting pet hair/dust maybe. So for same pri
...Person51389 in r/AirPurifiers
March 13, 2026 6:00 PM
2
Please help me find an air purifier for my issues.
For VOC's + odors Austin Air is very good but you would need to pay about 750 (they might have a cheaper one ?). That's one of the best, and probably worth it for your health imo. As you aren't even sure what your triggers are possibly, you want to get something very good. So those have a very large
...Person51389 in r/AirPurifiers
March 21, 2026 5:07 PM
2