COWAY Air Purifiers for Home Up to 1,748 ft², HEPA Filter for Smoke, Allergies, Pet Dander, Odor, Air Quality Monitor, Auto & Eco Mode, Timer, Filter Indicator, 3yr Warranty, Airmega 200M White

This air purifier has an excellent sound profile. At the middle 2 setting, it makes a gentle low-pitch whooshing noise, which is basically perfect for the volume of air it's pushing. I would go so far to say it's a pleasing sound in a bedroom or an office. At the low 1 setting, it's essentially silent from 4 feet away. By comparison, my evaporative humidifier is considerably louder at its middle setting. Most air purifiers in this price range and size class perform similarly because they use HEPA filters and have similar airflow rates. Thus, I believe the sound of the purifier becomes the most important differentiating feature. The sound of the thing is what you're actually dealing with everyday. Before this, I owned the Blueair 311i Max, and its fan noise at the medium setting was higher pitched and thus more annoying than the Coway's. In the Blueair, you could hear a pitchy electric motor noise, while that sound is completely absent in the Coway. I'm sensitive to high pitch noises, and I can't hear anything high-pitched from the Coway. I use this air purifier in the simplest way possible. I put it on the 2 setting and leave it untouched. The operation of this product is super simple. Popping out the pre-filter for occasional vacuuming is easy. Highly recommend this air purifier. EDIT: March 2026 update, I've been using this for almost 3 years, and it's still working the same as new with regular filter changes. I've also added air quality monitors to my home, and the room this sits in has measurably better air quality when I'm cooking or when outdoor air quality drops. This air purifier has been performing objectively well in my home.

Everyone says this is the best air filter unit for the money. I don't know, maybe it is maybe it isn't. But it does work and it's very quiet on the low setting and reasonably quiet on the medium setting. On high it gets quite loud, but you really don't need it to be on high under normal circumstances unless you're burning something in the kitchen. Anyway, I like it, and it definitely removes dust and other particles like smoke and makes the air noticeably better. It's also fairly compact and light weight, so it's easy to move if you need to. The lights on top might be annoying to you, but you can always cover them.

I was planning to buy a purifier to help with the pollen and food smells and chose this model. It has worked very well for a 2 bedroom apartment. Its not too big, not too small, so I keep it next to the dining table and the system is set to Auto or Eco. Both detect air quality and adjust the fan speed accordingly. In terms of noise levels, I agree with most reviewers that it’s very quiet on low settings; high setting being comparable to the noise a kitchen extractor makes. Allergies and sneezing are less in these few weeks, and the smell of food definitely does not linger as long as before. In a 2-3 hours it’s basically gone. I hope to keep updating as I go but I can already tell this one is a keeper.

this is a very nice air cleaner. I really like the settings so that it will turn itself off after a few hours. it cleans a big room well and is super quiet.

I’m lucky enough to walk through my urban environment without any chemical or scent sensitivities. But the HEPA filter in these Coway units are so chemical smelling that I immediately get a headache and nausea from them. It takes a long time of running the unit for the scent to dissipate. The Wirecutter review mentions this horrible, caustic scent but says it’s a resolved problem. It is not. Coway even mentions it in their FAQ. They know it’s a problem. I emailed and asked for a replacement filter because of Wirecutter’s assertion that it was a thing of the past, so surely I just got an old filter? Coway will not send you a new filter, they just tell you to run it in a room with a window open (so if it’s the middle of winter or the height of summer, you have to wait for spring or fall?). For context: I bought one unit, the one with the grid face, in September 2024, when it was 113°F in Arizona and it came with a toxic off-gassing filter. I left it outside for a week and then braved running it inside until the smell dissipated (obviously, one cannot open a window in Arizona in the summer, it doesn’t go below 100°F at any point in the day or night for many months at a time). It was a long 5 days of putting up with that smell. I ordered another unit in October, this time the other style that looks like an iPod shuffle face. Again, the filter smells noxious, and gives me a headache. Upshot: I will not be buying replacement filters directly from Coway, luckily there are lots of third-party offerings out there. Coway KNOWS this is a problem and doesn’t seem interested in solving it, despite making a product promising to make your environment less, not more, unhealthy. Wirecutter has dropped the ball by suggesting it’s no longer an issue. If, like me, you don’t have a million spare rooms to run an off-gassing air polluter behind a closed door with a window open until it converts to an air-cleaner, I’d strongly suggest purchasing from another brand. Update: I got another Coway Airmega. I wanted one for my bedroom. I’m jealous of the people who seem to be getting filters without the smell problem, because it happened again with this unit. It smells like you’ve walked into a cheap carpet warehouse where they also happen to be storing slightly burned sneakers. I’ve never experienced that with the HEPA filters for my AC or any of my vacuums, it’s a Coway specific thing. It’s also mentioned in many reviews if you search here. It’s bad and it lasts for days, over 7 days for the smell to lessen this time. Once that’s over and you’ve just gone ahead and breathed in all those noxious fumes, the unit works great! The auto function is awesome, it really reacts to things that kick up dust, like if I shake out the pet bed or scoop cat litter, sending the unit into high mode for a few seconds in response. When it’s on speed one, which it is most of the time on auto-mode, it’s almost completely silent. I like that I can turn off the large blue air quality indicator light, but why in the world don’t the two green lights that indicate speed also turn off with it? The unit is pretty far from my bed so it doesn’t bother me at night, but they are really bright. I’ll get my replacement filters from someone else, because I’m not going through that awful sick feeling of off-gassing the Coway brand filters again, but I do like the units and how they function a lot.

I first used this air purifier in my child’s room. My child has seasonal allergies, and after using this air purifier, the allergy symptoms definitely improved, and the air in the room feels fresher. I liked the Coway airmega purifier so much that I replaced the previous one in the living room with a Coway model. Since then, the air quality in the entire house has improved. One of the best features is Eco Mode. When we’re out or when there’s no one home, I leave it running in Eco Mode, and it keeps the air quality great all day without wasting energy. After a day out, I come home to fresh, clean air. I’m really happy with the results. Replacing the filter is easy, and the noise is minimal, so it doesn’t disturb me even in the living room. I highly recommend this air purifier for anyone sensitive to allergies or dust! It’s not only great in performance, but the design is sleek and fits well with the decor of the house

Works great, can buy replacement filters on line as needed & cheaply. So glad I had this during recent fire pollution in my area in upper Wisconsin. It's sturdy, but light , very portable & attractive to look at.

This product is definitely worth the money. It keeps the air in my home so clean, it is truly exceeding my expectations. As the weather shifted into spring, the pollen has been a bugger but step into my home and my surfaces are pollen free and nearly dust free. I had a bit of a musty smell in one of my closets and set this up in there and within a matter of a few hours, the smell was completely gone and has stayed gone. It is easy to use, built well and makes little to no noise (except when turned to the highest setting which I only use when frying something). Being that it is pretty compact and very lightweight, It is easy to move around the house. I would definitely purchase this product again.

This is a great air purifier. I did my research and found that the cheap ones don’t last very long, but this one seems like very high quality with great independent third party reviews. Filters last a very long tim and can be found for reasonable prices. We are experiencing extremely high levels of smoke for weeks of the summer due to Forrest fires. This purifier completely removes any hint of smoke from my entire home. My house is 1500 sq/ft, larger than what this is rated for, but it works great. I usually use it on power level 2 and it is a very reasonable volume. Level 3 is loud, but moves a lot of air, so it’s great for when your trying to remove a problem. This has dramatically reduced the build up of dust on surfaces in our home, and reduced my headaches during the Forrest fire season. I’ve told family member about it and they went out and bought one too. I highly recommend it.

I spent an entire day researching air purifiers, and this one seemed to be the best choice between cost, function, size, and noise level. As someone who is sensitive to noise, I am ecstatic that the lowest setting is literally whisper quiet. The middle setting is noticeable but if you have headphones in, or even just a TV on, you won't hear it. The highest setting however is louder and I have to put in earplugs or leave the room. I also appreciate the auto-setting and saw it kick in the other day automatically so I know it actually works (when I first turned it on, it just stayed in the lowest setting on auto, but a week later the auto setting started switching itself) Also my research said that Coway uses the same filter for both this and their other model, so I'm not as worried about getting replacement filters in the future. It doesn't seem like a super proprietary thing you can ONLY get from them.

If you leave it an auto, it is normally quite quiet, but when it decides that your air is dirty it is like a fairly loud fan. It is quieter than a cheap bathroom fan... The key with these is the filter, it's a fan with a good filter. The auto mode seems to work well, I smoke and when I light up it switches to medium or high mode. I live in "cat pee land" and it doesn't remove the odour, but seems to reduce it. I don't have equipment to tell me if the air is better, but it seems like it is.

As with any NY Times praised product, these devices are priced based on hype. It’s a low cost, cheaply made, cheaply sourced parts, air filter. You can find a teardown on GitHub that explains the low quality air sensor used, downgraded motor (used to use Panasonic motor, now some alternative is used). It’s fairly quiet in low/med modes, it vibrates a lot in high speed, due to a wobbly fan, though is relatively easy to use. As others have mentioned, the most fragile part seems to be the washable mesh, which is a shame and it’s apparently hard to source a replacement, tbh. The Coway Canada site does not officially sells this model as of this purchase date in late 2023, so support and service is uncertain and people have complained about full replacement parts support for this model in Canada. The Coway.ca website does sell air filters for these models, so perhaps support may have improved, tbh. If I could go back, I’d chosen a Levoit or a commercial design of the Corsi-rosenthal box fan filter model, that supports the superior MERV13 generic filters. The only good thing about these cheap Coway air purifiers is that they seem quite popular, so hopefully we’ll keep getting compatible filters and OEM ones for a few years. Conclusion a cheaply made, cheap parts, relatively powerful, quiet air purifier, that gets the job done, but seems to be geolocked to the US for repair parts according to other owners. Buy it on sale, as cheap as possible or look for other designs/brands. Almost six months of usage, seems to be going strong. Updated to 4 stars. Air quality light seems to somewhat match my PMS5003 PM2.5 based Air Gradient air quality sensor readings, so built-in air quality sensor actually works.

Within minutes on the max setting, I could feel fresh air and it’s just amazing. My sleep last night was so much better than before, didn’t wake up with my sinuses closed and hard to breathe. Others in the house noticed my room was fresher. I will update my experience in a couple months from now. The filters for the 200M/Mighty are also affordable and easy to find. Do not buy any of the purifiers with the new MAX2 filter - your luck may be bad. I had bought the 240 and it was giving a chemical “sweet” smell which irritated my lungs and eyes. Coway told me to offgas the filter for 3 weeks. No thank you, returned. Others have the same experience.