Coway Airmega 240 Green True HEPA Air Purifier Warm Gray: Quiet Operation, 300-500 sq. ft., Energy Star Certified
$299.99
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4.9 out of 5 stars with 129 reviews
5 out of 5 stars
30 September, 2025
originally posted on Coway USA
ABSOLUTELY REFRESHING
I was having issues with my downstairs neighbor cooking and the smell going through my floor vent. I decided enough was enough and looked into heppa air filters. I saw Coway recommended a few times and thought the design for the Airmax 240 looked nice and would fit neatly in my office. I was correct. It fit great. What I wasn't expecting was how easy to setup and maintain the unit would be. It has two filters, the Heppa filter which I clean once a month and replace annually and a front mesh filter that's simple to pop out (there is a convenient plastic tab) which I clean quickly each week using my dust buster. I literally change it along with my PC dust filters and it takes like 3 minutes. The front grill pattern is nice and the unit is very quiet unless you put it on max setting. I keep it on auto which automatically adjusts as needed and it only gets really loud if I fart into the sensor which makes the LED turn a comical red. Great machine and it can clean a large room and a lot of cooking and fart smells for those wondering. 👍
1 reply from Customer Service team - 6 months ago
Thank you for the entertaining and insightful review! We’re glad the Airmega 240 has helped tackle those persistent cooking odors and fits perfectly in your office. It’s great to hear the setup and maintenance have been so easy—and we love your creative use of the sensor test! The auto mode and dual-filter system are designed for exactly that kind of convenience and performance, and we’re thrilled it’s making a noticeable difference in your space. Thanks again for choosing Coway and for sharing your experience with such personality!
5 out of 5 stars
27 July, 2025
originally posted on Coway USA
Works great, and looks nice too
Works great, and looks nice too. It's quiet, especially on low, but even on higher fan speeds, not to distracting
1 reply from Customer Service team - 8 months ago
Thank you for taking the time to share your feedback! We’re so glad to hear that your Airmega 240 is delivering great performance and blending in beautifully with your space. Quiet operation—especially at higher speeds—is something we work hard to achieve, so it’s great to know it’s hitting the mark for you. If you ever have questions or need support, please don’t hesitate to reach out at Info@cowaymega.com. We’re here to help anytime! Coway USA
5 out of 5 stars
9 June, 2025
originally posted on Coway USA
Great investment- especially with wildfire season
I like how quiet this runs. Even at full fan speed it’s like white noise. The air quality in my apartment is noticeably better after 2 days of running it. I run it on smart mode almost always and it meets my needs. It has a vintage look to it and blends well with decor. Love it!
1 reply from Customer Service team - 10 months ago
Thank you so much for your thoughtful review! We're thrilled to hear that the Airmega 240 is making a noticeable difference in your apartment's air quality. The quiet operation and smart mode are designed to bring effortless comfort, and we're delighted they're meeting your needs. Plus, we love that you appreciate its vintage aesthetic—it’s great when function and style come together! If you ever have questions or need anything, we're here for you! Coway USA
5 out of 5 stars
16 January, 2025
originally posted on Coway USA
Great product
We are very happy with our air humidifier we would definitely shop again and recommend this product to friends
1 reply from Customer Service team - 1 year ago
Thank you for your kind review of the Airmega 240! We’re thrilled to hear that you’re very happy with your air purifier and that it’s met your expectations. It’s wonderful to know that you’d recommend it to friends and shop with us again—it truly means so much to us. If you have any questions or need assistance, feel free to reach out—we’re always here to help. Thank you for choosing Coway and for sharing your positive experience! Best regards, Coway USA
5 out of 5 stars
28 June, 2024
originally posted on Coway USA
Amazing filter
Bought this one as a second filter because the first one (identical model) worked so well. Extremely quiet, works very well (judging by both elimination of wildfire smoke and sickness not getting passed between people in the same room over a long period of time).
1 reply from Customer Service team - 10 months ago
Thank you for your review! We're thrilled to hear that your first Airmega 240 worked so well that you decided to add a second one to your space. It’s great to know it’s helping with wildfire smoke and even improving air quality in a way that supports health. Plus, its quiet operation makes clean air effortless! If you ever have any questions or need tips on optimizing performance, we’re always happy to help! Coway USA
5 out of 5 stars
21 May, 2024
originally posted on Coway USA
I loved it so much I bought another!
I bought an Airmega 400 and 240 this past winter and love them. So I had buy another Airmega 240 for our master bedroom. It works so well that we sleep even better now with cleaner air. Night or sleep mode is so quiet but still cleans the air and automatically turns on from Smart mode. I like that you can also manually switch to sleep mode or turn off all the lights. This model is great for any room in the house.
1 reply from Customer Service team - 3 months ago
Thank you so much for sharing your experience with the Airmega 240. It’s wonderful to hear that both the 400 and 240 have made such a difference in your home—and that adding another 240 has helped you sleep even better with cleaner air in your master bedroom. We’re glad the quiet Sleep Mode, Smart Mode automation, and light‑control options are making things even more comfortable for you. If you ever have questions about maintenance or optimizing performance, our team is always happy to help at Info@cowaymega.com.
5 out of 5 stars
2 April, 2024
originally posted on Coway USA
Best looking air purifier
This seems like a high-quality air purifier that has a nice aesthetic appeal. I’m happy with the purchase
1 reply from Customer Service team - 2 years ago
We're delighted to hear that you are satisfied with your purchase of our high-quality air purifier! Our team works hard to ensure both performance and aesthetic appeal in our products. If you have any further feedback or need assistance in the future, please don't hesitate to reach out. Thank you for choosing our air purifier!
5 out of 5 stars
29 March, 2024
originally posted on Coway USA
Clever Design
I've owned several air purifiers over the years and this Coway Airmega is the best one. It's sleep feature is so quiet it doesn't disturb my sleeping. The design allows you to place it against a wall and has a screen you can pull out and clean. One of my co-workers recommend as she has had hers for several years and still loves it. My allergies are terrible and this has made a huge difference for me at home.
1 reply from Customer Service team - 2 years ago
Thank you for sharing your experience with the Coway Airmega air purifier! We're glad to hear it's been the best one for you and has helped with your allergies. The quiet sleep feature, wall-friendly design, and easy-to-clean screen are some of its standout features. It's great that your co-worker's recommendation led you to such satisfaction. If you need any more help or have feedback to share, feel free to reach out. We're here to ensure you continue enjoying cleaner air at home.
4 out of 5 stars
25 August, 2023
originally posted on Coway USA
Quiet
Very quiet and effective. Ramos up if there is “smoke ”from cooking. Would recommend.
1 reply from Customer Service team - 3 months ago
Thank you for sharing your feedback on the Airmega 240. We’re glad to hear it’s both quiet and effective in your home, and that the unit responds quickly when cooking creates extra particles in the air. We appreciate your recommendation and the time you took to share your experience.
5 out of 5 stars
7 June, 2023
originally posted on Coway USA
Efficiently captures and eliminates polluation
[This review was collected as part of a promotion.] This Airmega 240 HEPA filtration system is remarkable. It efficiently captures and eliminates airborne pollutants, allergens, and odors, leaving the air noticeably cleaner and fresher. I have noticed a significant reduction in dust particles and pet dander, which is a game-changer for my allergies. The air quality indicator is a great feature that keeps me informed about the air conditions in real-time. It accurately displays the current air quality level using a color-coded system, allowing me to adjust the settings accordingly. The auto mode is incredibly convenient as it automatically adjusts the fan speed based on the detected air quality, ensuring optimal purification without any effort on my part. The timer function is a fantastic addition, allowing me to set the purifier to run for a specific duration. It's especially useful when I want it to operate during certain times of the day or night. Additionally, the filter replacement indicator takes away the guesswork, notifying me when it's time to replace the filters, ensuring that the unit maintains its peak performance. The Airmega 240 is designed for spaces up to 403 sq. ft., and it effectively covers the entirety of my living area. The sleek white design effortlessly blends into my decor, and the unit operates quietly, not disturbing me during my daily activities or sleep. Overall, I highly recommend the Airmega 240 True HEPA Air Purifier to anyone in need of a powerful and reliable air purification system. Its exceptional performance, convenient features, and robust filtration capabilities make it a standout product in the market.
4 out of 5 stars
18 May, 2023
originally posted on Coway USA
Quiet and does the job well
Very quiet unit. I don't even notice it is running on low settings. In Smart setting, it adjusts its fan speed based on what the sensor reads in the air. The only thing I wish it has wheels to move around a little easier without scratching the floors.
5 out of 5 stars
27 April, 2023
originally posted on Coway USA
Great product
[This review was collected as part of a promotion.] My wife and I purchased a home in March. It was so stuffy feeling and the air quality just sucked. It was carpeted throughout. We pulled the carpet and started using this purifier and we noticed a big difference. We have it placed in between the kitchen and living room. It has removed the odors the previous owners left behind lol. It’s very easy to setup. It’s really quite I forget it’s on unless I see the light indicating it’s still on. I leave it on smart setting and just let it be. Our kitchen and living room is grayish it goes perfect with the decor.
5 out of 5 stars
18 April, 2023
originally posted on Coway USA
Awesome Addition to the House
[This review was collected as part of a promotion.] I've actually never owned an Air Purifier before and recently moved into a smaller apartment, with pets, in the midst of allergy season. This machine is wonderful and was so easy to set up right out of the box. It's a little large, but being neutral colored is great for my space. It's not too loud, which was something I was worried about, and it's super simple to change the different modes. I like that I don't need to use a remote as I tend to just lose them/ end up using the buttons on whatever device I have anyways. I feel like the air in my apartment is so much better and cleaner. I haven't yet had to change out the filter but that also seems to be very easy! All in all, really happy with this and glad I finally thought about getting an air purifier.
5 out of 5 stars
18 April, 2023
originally posted on Coway USA
Helped make our musty basement smell fresh
[This review was collected as part of a promotion.] We are currently living with family in their basement room and when we moved in it was quite musty. We got Airmega 240 to help clean the air and it has done a great job reducing the musty odors and making the toom more livable.
5 out of 5 stars
18 April, 2023
originally posted on Coway USA
So good
[This review was collected as part of a promotion.] I needed something to keep my house, feeling clean and keep dust off of my electronics. This product was absolutely amazing and did everything it was supposed to and it looks great. I will always have one of these in my office as I feel like it helps me with my work and helps my room feel great.
5 out of 5 stars
17 April, 2023
originally posted on Coway USA
Perfect for my son with allergies!
[This review was collected as part of a promotion.] I'll admit when I got this I was a little skeptical about everything it claimed to filter out. But after only a few hours I already noticed a difference in the air quality in the room. My son has dust and pollen allergies and his sinuses were really bothering him. After a few nights of having the purifier in the house he doesn't seem to be having issues inside anymore. It was super simple to set up and get started and there's a light indicator to tell you when it needs a new filter. It's about as loud as a fan so not that bad. There's definitely a draft around it though where it shoots out the clean air and it can be a little chilly at times if you're right next to it. But I can definitely tell a difference in the quality of air in my house and I love it!
5 out of 5 stars
17 April, 2023
originally posted on Coway USA
Great product!
[This review was collected as part of a promotion.] Amazing product for everyday usage. Great minimalistic design for any home settings. It runs quietly with no disturbance. Easy to install and maintain. I had great results and can clearly see the difference in air quality. I highly recommend.
5 out of 5 stars
13 April, 2023
originally posted on Coway USA
Nice Air purifier
[This review was collected as part of a promotion.] GIVE IT TIME; I have to stress this due to the smell that the new filter emits. I plugged mine in and had it running in seconds. Operation is very easy and smooth. I love the smart option that selects the setting for you based on air quality. Once the smell went away from the new filter, it didn't take long and the air in the room seemed to be a much better quality. I like the ease of access and use of the pre-filter in the front. I clean it once a week with a vacuum. Great purifier and blows cold air out too.
5 out of 5 stars
13 April, 2023
originally posted on Coway USA
Powerful machine
[This review was collected as part of a promotion.] This is the 4th in my house. My MIL used to smoke so I became a bit neurotic about the indoor air quality in our building (she lives downstairs) anyway, this air purifier is huge. I wasn’t expecting it to be this size but I am so glad it is, it has replaced the use of two purifiers I used in one area. The color and design make it look like art. It’s very nice.
5 out of 5 stars
13 April, 2023
originally posted on Coway USA
A Powerful & Whisper Quiet Air Purifier
[This review was collected as part of a promotion.] A wonderful and effective air purifier that eliminates odors and captures airborne particles. The Airmega 240 is by far the best HEPA air purifier I have used in my home. We use it in the living room / kitchen I can totally tell a difference in the air when I return home absolutely no odors and really helps with my seasonal allergies. I leave it on Auto Mode and turn it up when cooking or vacuuming when I know the particles are airborne. Very lightweight and simple to setup to use immediately out of the box after removing the plastic wrapped filter. Just turn it on and forget about it while it does its job leaving fresh clean air effectively!