#1
Coway
Airmega 350
29 positive 0 neutral 9 negative
Based on 38 Reddit mentions
$339.00
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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.
Which do you think the baddies will like?
ChatGPT is wrong again. I would always source specs directly from product pages. Coway Airmega 350 CADRs: Dust: 376 CFM Pollen: 450 CFM Smoke: 352 CFM Winix T810 CADRs: Dust: 265 CFM Pollen: 267 CFM Smoke: 272 CFM CADRs here apply to the highest airflow speed/setting only. Lower speeds have lower CA
...sissasassafrastic in r/AirPurifiers
August 28, 2025 3:12 PM
7
Any reason not to go totally overkill and get an excessively strong air purifier?
Most brands overstate coverage ratings. If you see a large figure (e.g., 1,500 - 3,000+ sq. ft.), this is likely at 1 to 2 Air Changes per Hour (ACH) which is too low. In any case, Clean Air Delivery Rates (CADRs) are the better metric. The Coway Airmega 400 has a top Smoke CADR of 328 CFM. Based on
...sissasassafrastic in r/AirPurifiers
May 8, 2026 10:23 PM
4
Large bedroom purifier recommendations
So you prefaced 1,400 square feet as "Room Volume". I assume this is still square feet and not 1,400 cubic feet, the latter actually being volume. Purifiers aren't good at removing visible dust particles as they're large and heavy. See the sticky post at the top of the subreddit and our FAQs wiki pa
...sissasassafrastic in r/AirPurifiers
June 20, 2026 10:45 PM
3
Looking For A Genuine Top-Tier Air Purifier For 3 Rooms Of My Apartment
Housefresh.com's reviews are useful, because they measure sound and CADR using a consistent methodology, allowing you to compare among units. They've tested the three you mention. I'd suggest making a table of CADR and noise at each fan speed from their reviews. That's what I did. Based on a quick l
...theorist9 in r/AirPurifiers
May 13, 2026 4:27 AM
3
Best AirPurifier unlimited budget
Coway Airmega 350/450 are amazing.
Brilliant-End4664 in r/AirPurifiers
April 6, 2026 9:21 AM
3
Need some suggestions for an air purifier to help my cat who has asthma and allergies.
Coway Airmega 350/450 would be my pick.
Brilliant-End4664 in r/AirPurifiers
April 8, 2026 1:11 AM
3
COWAY vs Blue Air vs something I’m not thinking of?
For the Coway 350, you would still need 2 for the main rolm and 1 for the bedroom. You cannot base it off of the advertise sq ft coverage. If your ceilings are 8 ft, you would need about 467 CADR for the main room and 200 CADR for the bedroom to get 4.8 ACH. The Coway 350 advertises average about “3
...NoobShooter777 in r/AirPurifiers
May 30, 2026 5:57 PM
2
Looking for a purifier that’s good for an asthmatic cat (best for particle/dust removal) w/ NO OZONE and true hepa
In general, purifiers aren't good at reducing visible dust particles as these are large and heavy compared to "invisible" pollutants like PM2.5. See the sticky post at the top of the sub. Have a look at their product pages. The Coway Airmega 350 has higher Clean Air Delivery Rates (CADRs) than the A
...sissasassafrastic in r/AirPurifiers
June 10, 2026 1:58 PM
2
Allergies bad … impulsively purchased this purifier
Right, so I don't know your budget, but I believe a CR Box with 400ish CFM would give you around 5 air changes per hour...for borderline excellent air. (4.8 is good, 6 is excellent.) So you want to try to get I believe around 400 or even 500 CFM if you want excellent. A 280 dollar Levoit Core 600 do
...Person51389 in r/AirPurifiers
April 28, 2026 3:41 PM
2
Allergy-Focused Setup (3 rooms) for medium-speed performance + reasonable noise
Levoit will still clean your air. They even publish PM2.5 CADRs for most of their models. While the Levoit Vital series and EverestAir perform very well, they may not have the build quality of the more premium Coway units. Is it better to slightly oversize units so they’re effective on medium/quiet
...sissasassafrastic in r/AirPurifiers
February 23, 2026 11:46 PM
2
