Coway - Airmega 100
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Last updated: Dec 11, 2025 Scoring
Liked most:
12
0
"Silent"
"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"
19
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"
17
3
"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 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."
30
3
"A Coway AirMega in the classroom was how I survived a couple bad wildfire years. It made an enormous difference."
"this thing has been amazing!!! ... I have two kids with seasonal allergies and this thing has been amazing!!!"
"It’s amazing how much it can grab and filter out. ... when I last replaced my filter, it was almost black so it was working hard!"
10
1
"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:
2
2
"when it would turn on to max air purifier it gets pretty loud."
"when it would turn on to max air purifier it gets pretty loud."
3
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
0
2
"All of the conventional options recommended won’t cut it if you’re being serious. ... I have a few coway airmegas and blueairs and they don’t do much for real VOCs/smoke. ... My airmega has like 1lb of carbon, I’d recommend an allerair- I’ve got two airmedic 6 pro and the difference is remarkable. I think they have 25+ lbs of carbon."
"tried the Conway and there was so much plastic offgassing. I returned it.."
0
3
"Energy Star rates the Coway Airmega 100 for 169 square feet. ... Sadly it's very common for air purifier companies to overinflate their room size coverage. ... Energy Star and the Association of Home Appliance Manufacturers are great sources for seeing the recommended room size. Even then, the room size is based on the highest fan speed. Sometimes there can be big differences among the different fan speeds."
"You need one per room, they dont really cover more than a few hundred sq ft."
"The Airmega 100's top CADRs are too low."
3
7
"so are Coway and Blue Air when you add up the cumulative price of filters. ... And, I find I need filter replacements much more often than recommended further increasing the cost."
"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"
I use Coway from Amazon. So far I have the Airmega 100 for my bedroom and an Airmega 150 for the living area. Might get one more for my office at some point. ETA: I have severe allergies and migraines and I have noticed an improvement in both. I wake up with a clear nose and have had way fewer migraines.
r/homeowners • What are the best air purifiers for home currently? Do you notice any difference when using them? ->I just bought two Coways (100, 200). They seem good so far. One question: they seem always to stay on blue state (good air quality). Does yours cycle through other air quality states and kick on more?
r/AirPurifiers • can breathe and sleep again (coway review) ->I have 5 Coway Airmega’s. 1x Airmega 250 3x AP-1512’s 1x Airmega 100 They are BY FAR the best I’ve ever had and I recommend them to everyone. There was a very thorough test video done by wire cutter that originally piqued my interest here: https://youtu.be/VM9CJZpqfpA?si=s45QTvHQnlvtbcDE
r/BuyItForLife • The REAL best air purifier - I HATE DUST! ->This is the big one we have. Best bang for the buck IMHO: https://cowaymega.com/products/mighty-ap-1512hh And this is what I have for my very allergic son’s room. https://cowaymega.com/products/airmega-100
r/BuyItForLife • The Best Air Purifiers? ->Eh, Energy Star rates the Coway Airmega 100 for 169 square feet. How big are the rooms you're staying in? https://www.energystar.gov/productfinder/product/certified-room-air-cleaners/details/2732648 Sadly it's very common for air purifier companies to overinflate their room size coverage. Energy Star and the Association of Home Appliance Manufacturers are great sources for seeing the recommended room size. Even then, the room size is based on the highest fan speed. Sometimes there can be big differences among the different fan speeds.
r/ZeroCovidCommunity • I know this has been asked before, but are air purifiers for travel worthwhile? ->Coway would be the most reliable in considering Winix (or even Levoit). But I wouldn't recommend the Coway Airmega 100. Per the [AHAM 2/3 rule](https://ahamverifide.org/ahams-air-filtration-standards/) mentioned in the AutoModerator comment, your "adjusted" square footage of 197 sq. ft. requires minimum CADRs of 132 CFM. The Airmega 100's top CADRs are too low. I would recommend the [Coway Airmega 150](https://cowaymega.com/products/airmega-150) or [Coway Airmega 160](https://cowaymega.com/products/airmega-160) instead. If you want to order directly from Coway, use the discount codes **COWAYMEGA10** or **FORYOU10** for an extra 10% off. Keep in mind the CADRs listed apply to the highest airflow speed/setting only. Lower settings have lower CADRs, which reduces cleaning effectiveness.
r/AirPurifiers • (US) Winix C610, Coway Airmega 100, or something else entirely? ->I picked up the small Conway Airmega for my bedroom and am pretty happy with it
r/BuyItForLife • The Best Air Purifiers? ->I suggest Coway TrueHEPA ones. Less bells and whistles. More good performance.
r/AirPurifiers • Best air purifier for a chemo patient out of these ? UK ->Coway and BlueAir are great. Make sure it says "True HEPA," unless you build a corsi-rosenthal box Levoit ones aren't always true hepa.
r/BuyItForLife • Home air purifier. Especially those good for people with allergies ->Buy the Coway air mega it usually goes on sale pretty often. 10/10
r/CleaningTips • Air Purifier sucking dust in my room ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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