Alen
35i
Based on 23 Reddit mentions
$279.99
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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.
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
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
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
Recommendations for an air purifier without breaking the bank
Hmm, but you didn't explain any of that in your main post ? As it sounds like smoke/VOCs are a bigger issue than your main post indicated. So firstly, I would look at the vents. As you are sharing air via vents in an apartment. (Mine is an older place with a smelly carpet...but no charges vents/no s
...Person51389 in r/AirPurifiers
March 26, 2026 5:45 AM
1
Air purifier for 10x12 nursery
I have the Alen 25i in my office and would also be great for a small nursery. Only 40 db at its highest setting which is great for babies since you want to keep it under 50 db. I also really like how it sounds. A 35i or flex would also be a great choice. I like the flex because it’s a 45i without al
...NumerousAssumption47 in r/AirPurifiers
January 23, 2026 3:49 AM
1