Coway - Airmega ProX
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Reddit Reviews:
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Last updated: Dec 25, 2025 Scoring
Liked most:
276
92
"It’s is SO MUCH more quiet than the s7 it ramped up the suction power from 4000 to 19000 yet I can let it clean my office room while being in a call now."
"Extremely quiet compared to our last one to the point where we can have it running while my partner is in work meetings (besides emptying water and dust bin, but that is 10 seconds of loud x 2)."
"pads that lift on carpet so you can run it while the baby naps"
166
21
"I recently found out I have a bunch of allergies- including my dog, so I got these Winix units to try and help combat the allergies. ... Within about 45 minutes of running one in my living room, part of my nose that has been clogged for as long as I can remember opened up. I’m breathing better than I have in years."
"I can tell you they really work. I have a mold allergy, and mold is literally everywhere in outdoor or indoor air with spores just waiting to land in a suitable environment for growth, but I have no symptoms at home with my two small Winix."
"They do a good job of removing smoke from the room."
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2
"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."
"the air monitoring report and air quality sensor. I've had a home improvement project going and as soon as dust started flying the air filter on auto setting cranked all the way to the max to counter."
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16
"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."
"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!"
"My family has been breathing easier, especially during allergy season"
24
1
"I've had a Coway airmega going 24/7 for six years that hasn't developed any noise problems"
"They've run 24/7 for years without an issue."
"A little more expensive, but reliable. ... I have an HPA200 and HPA 300 that have been running 24/7 for years."
Disliked most:
23
17
"The Pro X for example is marketed at over 4,000 square feet but it's only one air change. That won't be enough to help with odors."
"My Levoit Core 200s is advertised on Amazon as providing coverage for a 1,000 square foot room. In reality, it *could change the air in a 1,000 square foot space but only once in an hour on it's highest speed. You want more air changes per hour. Going by 5 air changes an hour on it's highest fan speed, the Core 200s covers 200 square feet."
"The mini is much too small for a bedroom."
2
6
"not worth it for the sheer size of the Foodi. It's a beast and very heavy. ... Yeah this is the same reason I don't really use my Foodi."
"I need the space on top of my induction for the extractor fan for the steamer as I steam eggs every day - so the ninja is now in a cupboard."
"that thing is so bulky and sits in the cabinet below the counter, I want to keep keep one on the counter…."
7
2
"The off gassing on mine was terrible."
"tried the Conway and there was so much plastic offgassing. I returned it.."
"It's all cheap plastic construction"
10
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"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."
"I bought it to reduce VOCs, however according to my sensor it loses effectiveness in under a month, then you are on the hook for a new $300 filter. ... A replacement filter lasted a similar amount of time for VOC effectiveness."
"So I purchased Austin Air Healthmate+ HM450 believing the higher carbon content in its filters will be more effective but after I tested it today it is also not making much of a difference. ... Austin Air HM450 has 15 lbs of activated carbon. Is that also not enough to make a dent? ... There’s no wildfire smoke currently. But my Voc is at around 225ppb. And no matter for how long I run the purifier, it stays at that level."
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"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."
"450 is round. New design. Not as good but more trendy. ... Higher claimed CADR. It is round so that number will go down rapidly. ... The VERY SHORT version, although ... there's a sticky ... is that round units are not inferior due to their shape. They're inferior because ALMOST WITHOUT EXCEPTION they have: * No removable pre-filter * Minimal Carbon, placed after the main filter * Deformable main filter * Smaller fans which have to spin faster to move more air therefore have a shorter lifespan * Shorter filter life leading to more costly replacement * Questionable filter efficiency, since it's difficult to manufacture a deformable HEPA filter. Levoit in particular claimed their filters were HEPA but they weren't at the time. They might be now, since they've started shipping them reinforced. * Instructions to VACUUM YOUR FILTERS, which pretty much means they're not HEPA. ... The airmega round units are, unfortunately, no exception."
"filter replacements can get pricey though ... filters are WAY overpriced considering you can get the machine with 2 filters for $120.."
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 ->Buy the Coway air mega it usually goes on sale pretty often. 10/10
r/CleaningTips • Air Purifier sucking dust in my room ->Coway airmega it's excellent. I have mine going 24 hours a day and it senses everything. It also filters the tiniest particles.
r/AirPurifiers • Air purifier recommendations? ->The airmega. You can buy filters specifically for dust. There's 3 different types of filters i believe you can buy, the original and two more alternatives
r/AirPurifiers • Air purifier recommendations? ->Sorry, there's some misinformation here. Roughly speaking, purifier sizing depends on room volume, pollution concentrations, and CADRs (although IQAir does not list CADRs for most of its models). A lower airflow speed or setting means slower and/or possibly ineffective cleaning. This becomes more pronounced as room volume or pollution concentrations increase. The [IQAir HealthPro Plus XE](https://cdn.shopify.com/s/files/1/0065/4780/0182/files/HP_PLUS_B2C_Product_Overview_v01_2025.pdf) has a top "Nominal Flow Rate" of 300 CFM.* Unfortunately this is also a fairly loud unit. *Document says 300 m^(3)/h, but I think this is a misprint. See the tech specs for the older version of this model, the [IQAir HealthPro Plus NE](https://cdn.shopify.com/s/files/1/0065/4780/0182/files/Tech-Specs_HPP-NE_120V_120924.pdf). The Amazon screen capture is incorrect. The [HyperHEPA filter](https://www.iqair.com/us/products/replacement-filters/hyperhepa-h12-h13-f3) is not H14 class. IQAir lists it as "HyperHEPA H12/H13". But to be precise, there is no H12 filter class designation in the [EN 1822-1:2019 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking standard](https://www.airum.com/frontend/immagini/files/EN%201822-1.PDF). There is only E12, whose filter group is Efficient Particulate Air (EPA). The [HealthPro Plus 10 year warranty](https://www.iqair.com/us/support/iqair-warranty-coverage) applies if you register the purifier *and* maintain a filter subscription OR provide filters' proof of purchases. I think IQAir makes high quality units with tight manufacturing tolerances. But they're not as powerful as the Smart Air Blast MKII or Coway Airmega ProX.
r/AirPurifiers • Is this overkill to buy for a small appartment? ->I got a Coway Airmega because it was highly reviewed on the Wirecutter website after my previous Levoit broke after only a couple years and wasn’t fixable (circuit board inside was fried).
r/parrots • Any recommendations for air purifiers? Ignore the mess, I’m currently in the middle of a deep clean in my room. ->We have two Coway Airmega units, one on either side of the house. They have been on 24/7 for several years now. Maintenance and cleaning are very minimal. Cost is about $150-200, although there are larger units based on how big of an area you need to filter. We are very happy with them! Whichever purifier you choose, I highly recommend you look into one with a replaceable HEPA filter. Other filtration methods just won’t give the same results.
r/homeowners • What are the best air purifiers for home currently? Do you notice any difference when using them? ->Agreed! And they now offer different filters depending on what is most important to you to filter: one for smoke, one for allergens, etc.
r/BuyItForLife • The Best Air Purifiers? ->firstly-whatever you want a 'purifier' to filter out has to be able to get to, into and through the device. i've yet to see a consumer level air filter that's strong enough to stir dog hair/dander up off the floor. for dust ? they all suck. i'm in colorado, very dusty area. they all suck. any good filter will clog quickly by definition. remember that ;) having said that, i use a coway 'airmega' in my bedroom and i'm fairly pleased w/ it. has a carbon pad for odors, filters out some dust, smoke, etc. they will all have yearly filter costs-generally anywhere from 50-200 bux/yr., mebbe ? none of them that i've seen are anything to sneeze at. ;-p
r/PetPeeves • What air purifier are you using for your pets? Need recommendations! ->Have the IQ air does not catch dust or similar. I ended up buying a.Blue air that does and running both. The air quality that comes out of the IQ air is excellent, but if dust is your issue, is not gonna help. Blue air smells like plastic in comparison.. tried the Conway and there was so much plastic offgassing. I returned it..
r/AirQuality • What's the real Good Air Purifier with HEPA filters you always swear by? ->This is the only correct answer. Don’t get air mega aim tho that’s a scam
r/BuyItForLife • The REAL best air purifier - I HATE DUST! ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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