#1
Coway
Airmega 400
124 positive 1 neutral 14 negative
Based on 139 Reddit mentions
$629.99
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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.
Is this overkill to buy for a small appartment?
I personally don’t feel comfortable using Coway units because of their antimicrobial coatings. I ran a Airmega 400 and 300 for a long time before I found out about the coatings. Someone posted the patent that lists the coating chemicals, and they don’t seem great. It might be lack of understanding o
...NumerousAssumption47 in r/AirPurifiers
October 29, 2025 6:16 PM
2
Air purifiers without Coway's green pesticide filters?
I reached out to coway after purchasing our unit and having really bad headache inducing offgassing and even the white filters they make seem to have it. The "true green'" is unrelated to thr coating. It's definitely the worst offgassing I have experienced from a purifier but also I actually ended u
...Big_Nefariousness785 in r/AirPurifiers
March 28, 2026 8:53 PM
1
Our second rabbit air purifier is officially up!
A 1,000 sq. ft. space requires minimum CADRs of 667 CFM. A 700 sq. ft. space requires minimum CADRs of 467 CFM. Total min. CADRs would be 1,134 CFM. Again, you'd want to exceed this total min. CADRs value because of higher particulate pollution concentrations. I don't know what PM concentrations pur
...sissasassafrastic in r/AirPurifiers
February 7, 2026 10:15 PM
1
