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.
Air Purifier Recommendations
Check out Alen. 45i or 75i. Just know that no purifier is going to do much about visible dust. Just the microscopic stuff.
ConBroMitch2247 in r/AirPurifiers
January 10, 2026 5:13 PM
3
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
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
Just tell me what air purifier to buy!
Alen 75i or 45i Levoit is terrible Coway and Winix are good.
ConBroMitch2247 in r/AirPurifiers
August 16, 2025 6:32 PM
3
Cigarette Smoke Smell Removal considering Alen BreatheSmart 45i.
Did not even consider the voltage difference. Was contemplating cutting the cord and patching in a standard US 3-Prong. Super tempted to buy a used Alen BreatheSmart 45i or FLEX as they seem to be very similar. Honestly, I like that the Alen VOC/Smoke filters it have a decent amount of Carbon in the
...Quicksilver7716 in r/HouseFresh
July 15, 2025 9:05 PM
2
My first air purifier for my living room! Help!
I dont own any Winix or Coway, so I'm not sure each unit at each price. They all have similar sized units competing with each other though. Their websites will have all their models. If you want to try the ionizer, maybe get a Winix, just make sure it has the "P" plasma button on it to toggle it on/
...Person51389 in r/AirPurifiers
May 11, 2026 4:05 AM
1
Anyone with experience with alen air purifiers.
I've had just about every brand of air purifier. I highly recommend Alen air purifiers. I have two 75i's and a 45i. I've had the 75i's for two years now and they have been excellent. The cost of filters is high but that also insures your purchase with the lifetime warranty so hard to go wrong. They
...liqwood1 in r/AirPurifiers
March 24, 2026 8:34 PM
1
Anyone have a recommendation for the best air purifier for a large room?
I like the Alen brand, I use thier 35i and 45i for 1400sqf with 2 cats and .
Party_Restaurant_818 in r/recsmatter
April 4, 2026 1:24 AM
1