
Coway - Airmega 200
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Based on 1 year's data from Mar 17, 2026 How it works
Liked most:
17
0
"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"
7
5
"The filter set will cost you about $35 each year."
"Have filters that last way longer than they're rated for (as long as you clean the prefilter)"
"The main gotcha with these things is the replacement costs of the filters, and this was one of the least expensive ones I could find. ... I can get a pack of two HEPA filters and six carbon filters for $30 (USA) and that lasts me about a year and a half. ... I swap the charcoal filters every 3-4 months and the HEPA filters last 6-9 months."
28
0
"We’ve also had terrible Smokey days from the Canadian wildfires in my area and when I last replaced my filter, it was almost black so it was working hard!"
"the charcoal filters have helped my apartment not smell like Beef bourguignon for days after spending an afternoon cooking it in a Dutch oven."
"The sensors are amazing. ... Yes whenever I cook or smoke they instantly kick on and work really well."
13
0
"I have 2 Coway airmegas that are super quiet that I’ve had for nearly 2 years."
"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."
7
0
"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."
Disliked most:
4
3
"I love my Airmega 200's, but they're so loud on high :("
"the coways are a little TOO loud on high for my personal taste"
"are very noisy, as they have to stay on high mode."
0
2
"You need one per room, they dont really cover more than a few hundred sq ft."
"They don't really work if you have an active infestation. ... I've got 4 lg ones in an 800sq ft house and I swear they do almost nothing."
2
1
"My only complaint is the blue air quality light on the top panel is brigher than I want in my bedroom"
3
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
0
1
"The think I don't like is they really tank your electric bill"
Second, we've got 2, they're great. The Airmega 200 is basically the same unit too. Multiple smaller air purifiers tends to work a lot better than single big ones.
Sorry, what "air quality problems"? Can't say we've noticed any, with our 3 air purifiers running 24/7 in a one-bedroom apartment... 😉 (Both of us have pollen allergies and one of us has asthma.) That should answer your question. Seriously, buy an air purifier. Once you feel the difference you'll probably end up getting a few more. We've got two of the medium Coway models (Airmega AP-1512HH or 200M) and a smaller BlueAir. They also help with smells -- bathroom, pet, or cooking. Highly recommend the Coways because they: * Are whisper-quiet on all but the highest setting, and can auto-adjust (though we usually leave them on medium because they get loud if they kick into high). * Move a lot of air for their size * Have filters that last way longer than they're rated for (as long as you clean the prefilter) * You can turn the main light on the purifier off for use in a bedroom at night Tip: it's better to get several medium air purifiers and put one in each room or area rather than getting just one big one.
Don't waste the money on Dyson (they're heinously overpriced). Go with one of the Coway models, you'll get more airflow for your money and the filters last much longer than they're rated for. The Coway AirMega AP-1512HH and AirMega 200M are good picks (have both and like them quite a bit). The Levoit and BlueAir models are good too, but they tend to go through filters quickly and that becomes expensive fast. The prefilters on the Coway models are good at catching particles and dust before they make it to the HEPA filter and clog it, so the HEPA lasts much longer. Also, the activated carbon will absorb smells and chemicals. Also, unless you have a giant wide-open space or really big rooms, it tends to work better getting several mid-sized air purifiers vs. one extra-powerful one. More purifiers means more airflow without a lot of noise. They also do a better job covering multiple rooms, since they're less at the mercy of airflow between rooms.
Happy to help! For what it's worth, the Whirlpool suggestion seems to be a similar design to the Coway (with similar benefits). I just don't have previous experience with it, and the Coways are somewhat cheaper and come up consistently on lists of top air purifier models. Note that for many air purifiers, after 3-5 years you'll spend more on HEPA filters than you do on the purifier itself. That's why it's so valuable to have a design that reduces how often the filters need to be replaced. [Wirecutter by the way was my source on being able to run the filters much longer than they're rated for, and they did a good overall set of reviews](https://www.nytimes.com/wirecutter/reviews/best-air-purifier/)
They don't really work if you have an active infestation. Ive got 4 lg ones in an 800sq ft house and I swear they do almost nothing. We even have this electrostatic filter in the hvac and still I've get systems when the doors close or the AC goes on. I have 2x airmega 200s, germ guardian rated for 900 sq ft, coway with uv rated for 600 sq ft. 2 upstairs and one down. If I were you id try to build the biggest Rosenthal filter or several as they don't get down hall ways or around stairs, etc. The think I don't like is they really tank your electric bill and are very noisy, as they have to stay on high mode.
Absolutely love our Coway Airmega 200M. In fact, will be buying more shortly.
These worked very well for me when my area was inundated with smoke. My house is old and porous, so it was fairly smoky inside without them. I started with one that I would move with me from room to room. I now have 3 plus one smaller model. Edit: Coway has another model that is exactly the same but with a nicer looking front plate. I think it might be the 200?? I don’t know for sure. It takes the exact same filters as the 1512.
I have a Whirlpool Whispure that is about ten years old and has performed well, but I think you can get a similar sized Conway Airmega 200M for about half the price, and they are very well rated. A full filter set lasts for a year, you change the carbon prefilter every three months. The filter set will cost you about $35 each year.
I have the Coway Airmega 200M in my office which is approx 10x12. I also have an AirGradient indoor sensor. My particulate readings with the air filter are almost always at 0 for PM2.5, PM0.3 and PM1 readings.
How many sq. ft? Coway Airmega 200M or 250. Winix 5500-2. Yes they will help a lot for allergens and odors, as long as you clean the pre-filter weekly, replace the carbon filter every six months, and replace the HEPA filter every year.
I love my Airmega 200's, but they're so loud on high :(
it is a nice white noise, remember to hold the Ionizer button to turn off the light at night :)
i wouldnt choose any of those, i'd go with Coway Airmega 200M or Winix 5500-2 all the way
I'm also using a Coway Airmega 200m, I'm in a small apartment that has no cooking exhaust, so I keep mine between my kitchen and living room. It has a particulent sensor that works pretty well, when I'm cooking it kicks into high gear which is a bit loud, but it really only does that while I'm cooking. The low setting is almost silent even right next to it. You can set it to use the sensor or to the standard three speed settings. The main gotcha with these things is the replacement costs of the filters, and this was one of the least expensive ones I could find. I can get a pack of two HEPA filters and six carbon filters for $30 (USA) and that lasts me about a year and a half. I swap the charcoal filters every 3-4 months and the HEPA filters last 6-9 months. It has cut down on the amount of dust that collects on flat surfaces in my apartment and the charcoal filters have helped my apartment not smell like Beef bourguignon for days after spending an afternoon cooking it in a Dutch oven.
Same, I love my Conway 200. It even catches knats. I clean it every 2 weeks and it's usually pretty dirty. Only takes a couple minutes to clean.
The Coway Airmega 200M is great. Fairly quiet at the lowest two speeds, priced decently including replacement filters, and not a lot of lights. If you want to be extra safe, you can also look up “light dims” and buy some. They are stickers that generally cut 50% of the brightness when you stick them over a light on things.
Replacement filters are always expensive, especially if you stick with OEM ones. Luckily $30 for two is pretty reasonable.
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