Alen
35i
Based on 23 Reddit mentions
$279.99
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Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
Anyone with experience with alen air purifiers.
I’m using Alen 45i and 35i in our home and they work great. we have 2 cats and these machines remove any pet and cooking odors. filter needs to be replaced once a year. Having an app makes it handy to check or change settings as needed, also has a schedule option. good machines for the money.
Opposite_Yard_1857 in r/AirPurifiers
March 24, 2026 12:28 AM
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
Need a filter for odors please deadly allergic
The ventilator is a good idea as someone else suggested, as no purifier under 200ish bucks will do much for odors. A good unit for odors is an Alen45i, but it's 350 bucks. An Alen 35i I think is 290. One of the best is AustinAir and they are 750. So is suggest Austin Air, or maybe an Alen. For a ven
...Person51389 in r/AirPurifiers
March 13, 2026 12:00 AM
2
looking for air purifier for ~110 sq. ft. (dorm) room, mostly concerned with spread of viruses/bacteria
I think alen air would suit you.. you have the budget for it.. specifically, alen breathsmart 35i - it’s expensive but quiet.. has good carbon for vocs should you need it.. lifetime warranty so it can grow with you.. much more cadr than you need for the room, so you dont have to run it on high.. aga
...JamezDare in r/AirPurifiers
February 14, 2026 8:51 AM
1
My first air purifier for my living room! Help!
Great...although I just noticed about your 12 feet cielings not being in the 400 sq. Ft...meaning it's really more than 400 for the calculations. In which case an Alen 75i would be an even better choice. Or perhaps one of the other more powerful units. If you do get the 45i make sure you let it run
...Person51389 in r/AirPurifiers
May 11, 2026 9:48 PM
1
Recommendation for small bedroom
Filters always come with new units. A good mid-range unit for odors is an Alen 45i, with their best filter. Although it's 350. (35i smaller one is 290 I think.). So they have good filters for odors/VOCs with carbon pellets that absorb odors. (Their filters are 60 normal, 90 for that one for odors/VO
...Person51389 in r/AirPurifiers
March 17, 2026 2:19 AM
1