Coway - Airmega 350
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Based on 1 year's data from Feb 15, 2026 How it works
Liked most:
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"Last year there were wildfires nearby and the airmega kicked itself into high gear (I keep it on auto), so I do really trust that it’s actually doing something."
"The sensors are amazing. ... Yes whenever I cook or smoke they instantly kick on and work really well."
"A Coway AirMega in the classroom was how I survived a couple bad wildfire years. It made an enormous difference."
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"Last year there were wildfires nearby and the airmega kicked itself into high gear (I keep it on auto), so I do really trust that it’s actually doing something."
"The sensors are amazing. ... Yes whenever I cook or smoke they instantly kick on and work really well."
"great to put it on eco mode , as it detects poor air quality it automatically switches modes to higher setting and shows it as purple or red and once air is back to being good it goes back to eco mode and shows blue."
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"They've run 24/7 for years without an issue."
"I've had a Coway airmega going 24/7 for six years that hasn't developed any noise problems"
"we’ve had a Coway Airmega running continuously 24/7 for the last 6 years"
12
1
"I've had a Coway airmega going 24/7 for six years that hasn't developed any noise problems"
"I have 2 Coway airmegas that are super quiet that I’ve had for nearly 2 years. ... its noise was very inconsistent and it was poorly constructed compared to the Coway Airmega"
"Not noticeable at all under most circumstances."
5
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"Third party filters work fine and are half the price."
"Easy to clean and change filters."
"The filter is really easy to change"
Disliked most:
2
6
"I literally just bought the Airmega 350 on Amazon and immediately regretted since I can't find the replacement filters for sale anywhere. ... Coway finally responded but wasn't helpful. They said they don't know when the filters for the 350 will be released."
"the filter costs have you replacing filters every 3 or 4 months with full use."
"DO not buy their filters directly from them - way overpriced"
0
1
"I tried to reach out to coway multiple times via email as well as phone (waited over 30 mins) and haven't had any luck hearing back from anyone 😫. ... Coway finally responded but wasn't helpful."
5
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
4
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
bearfam1 1.0Think the 350 and 450 just came out recently! 'm a big fan of anything that gives 360 degrees purification on the cylindrical models cause I feel like it sucks in particles better. Also love that the top has an anti-dust grill so I can clean less.
I heard the same! Anyway the default filter lasts for a year so it should be fine for a while.
Brilliant-End4664 1.0Definitely return it and buy the new Winix 5510 or 5500-2. If you have a bigger space, the Coway Airmega 350/450 is amazing.
Winix 5510 for the smaller rooms. Coway Airmega 350 for large wide open spaces.
Coway Airmega 350, Winix 5500-2 and Coway Airmega 1512.
I have a 2,400 sq ft raised ranch. I run 2 x Winix 5500-2 and 1 x Coway Airmega 350. Airmega 350 is my favorite but its also 2x the price. Winix 5500-2 works great too.
Coway Airmega 350 has been great.
Its overall design and aesthetic, it filters 2,800 sq ft an hour. It has a 3 in 1 filter design. 360 degree filtration due to the base. And best of all, no ozone.
The winix and coway air intake is from the front. You want an air purifier oversized. Then you can keep it on a lower fan speed and still purify the area every hour. My house is 2,400 sq ft. I run 1 x Coway Airmega 350 which is rated for 2,600 sq ft. Plus 2 x winix 5500-2. 1 in the basement and 1 in my bedroom.
Coway Airmega 350 has been amazing.
Sorry. 2 x Winix 5500-2. And the Coway Airmega 350.
I'd look at the new Winix 5510 or Coway Airmega 1512. I have 2 x Winix 5500-2 and 1 x Coway Airmega 350 in my house. They work great.
Coway Airmega 350/450 is amazing.
Id get the Coway Airmega 350/450 for the main living space. The more changes per hour the better. Winix 5510 for smaller rooms and bedrooms.
BruhBacon 1.0I’ve been impressed with how quiet Coway has been. I’ve got the Airmega 350, but I’ve heard most of their models are pretty silent. What I’ve found too is that even on higher settings, and it being louder, the noise is more of a deeper “woosh” rather than a higher pitch “wish” sound (if that makes sense).
I’ve got the 350, and vacuumed it for the first time a week ago or so. Very easy, no issues, and took about 60seconds. Slapped that bad boy back into the machine and turned it back on. I’d also recommend vacuuming the outside grills of the 350 too as I found dust can sometimes collect between the grooves too. Again super easy and quick to do.
Classic-Pair5805 1.0Im between the winix t810 and the coway 350 or 450. Its so hard to know what to pick haha
Ended up just ordering a used like new 350 and 450 for pretty cheap. I have a small apartment anyway. Gonna put 350 in my bedroom and 450 in living/dining/kitchen lol
ConBroMitch2247 1.0Personally, yes I’d return the Blueair if you can. I prefer mechanical. You won’t be disappointed with the airmega!
Yes IMO the airmega would be better for your room size. The CADR and ACH for dust on the airmega is double that of the Blueair. (284cfm vs 133cfm). Honestly the Blueair is slightly underpowered for your room, but the airmega is slightly overpowered for your room. When it comes to airpurifiers always go with overpowered!
DXbadWX 1.0I have a coway airmega 350 and for the first day it smelled like a new car or a ‘fresh’ kind of scent when it ran on high AND I stood directly over the top of it with the air hitting me. After the second day the slight smell was gone.
_geesegoose 1.0For nurseries that size, I’d go with the Coway Airmega 350 and run it on low. It's quiet and you can swap in the Intense Smoke+ filters for extra VOC gas capture
jimster_90 1.0The 350 is on sale right now and is excellent
loveheraea 1.0So I literally just bought the Airmega 350 on Amazon and immediately regretted since I can't find the replacement filters for sale anywhere. Like you said, maybe it's fairly new and filters are not released yet. I tried to reach out to coway multiple times via email as well as phone (waited over 30 mins) and haven't had any luck hearing back from anyone 😫. How are you guys liking the Airmega 350? Do you think I should return it for the 450 or just start using and wait it out (hopefully) for the filters? The space I'm using it for is in the living/kitchen/dining area and covers around 2000sqft.
Low_Term1356 1.0I was going to suggest, like many top contributors here do, getting one purifier per floor and one for the bedroom — I had three AP-1512HHs in mind. But since you mentioned setting up a wedding registry, you might consider going with two Airmega 250S units and one Airmega 350 instead. Congratulations on your wedding, by the way!
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