Alen

35i

17 positive 2 neutral 4 negative

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.

Filtered by featurefilter qualityClear feature

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

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Person51389 in r/AirPurifiers

March 17, 2026 4:42 PM

3

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

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Person51389 in r/AirPurifiers

March 17, 2026 2:19 AM

1

Levoit or Coway - indoor housework & paint

Hi I was interested in getting an air purifier to handle cigar smoke but my budget is around the same $250-300. I just get smoke coming from outside and then my dad tracks it with him on his clothes. I was interested in an Alen 35i because of the sensor but I don't think it has a lot of activated ca

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Deulofeu10 in r/AirPurifiers

October 3, 2025 11:15 PM

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

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NumerousAssumption47 in r/AirPurifiers

January 23, 2026 3:49 AM

1

Levoit or Coway - indoor housework & paint

The Alen 35i and the Levoit Core 400S are tailored to particulates removal. Your issue is with odors. 400 grams of activated carbon is very little. And if it's plain/chemically untreated, it may not get rid of odors entirely. Unfortunately if your budget is $300 and you don't have much physical spac

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sissasassafrastic in r/AirPurifiers

October 4, 2025 2:39 PM

1

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