Coway

Airmega 250

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Coway Airmega 250
TL;DR: Durable, effective for allergens/odors, responsive auto-mode.

Overall

#5 in

Air Purifiers

according to Reddit Icon Reddit

User sentiment93% positive
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Top Pros

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Last updated: Apr 6, 2026

Reddit Reviews

Reddit IconArizonagamer710 1.0
r/AirPurifiersI have a old car whats the best air purifier?
10 months ago

You have an old car that's awesome! I also have an old car. What kind of car do you have? I drive a 94 Mustang Cobra. I have a coway Air Mega 250, and I have been happy with it.

r/AirPurifiersOver thinking and analyzing every review
10 months ago

I have a coway airmega 250. I have been happy with it.

Reddit IconAshamed-Status-9668 1.0
r/AirQualityBest Air Purifier on Amazon?
6 months ago

The Coway Airmega 250 and 250S are on sale for under $250.

r/AirQualityBest Air Purifier on Amazon?
6 months ago

The Coway Airmega 250 and 250S are on sale for under $250.

Reddit IconBigBootyBardot 1.0
r/smarthomeAnyone have a air purifier?
about 1 month ago

I have a Molekule and it’s sitting stored. The replacement filters are expensive as hell, and I find my BlueAir (the 211+) and Coways (Airmega 250 and 150) to be better. The latter aren’t “smart,” (although I think you have that option now), but I have them plugged in with smart plugs and I like that the Coways signal when the air quality changes like a basic air quality monitor would.

Reddit IconButtBong9000 1.0
r/malelivingspaceDo you have an air purifier in your room/condo/apartment? Why?
about 2 months ago

Yes, because I live in an old building. I have a Coway 1522hh in the living room, and an Coway Airmega 250 in the bedroom

Reddit IconCalmTrials 1.0
r/AirPurifiersNeed Air Purifier Recommendation
4 months ago

Highly recommend coway airmega 250 which is out of stock on their website but in stock on Amazon. I bought used like new for a little under 300 US which as of this comment used like new is still in stock. My partner has severe asthma to dust and cats, he was waking up nightly having full asthma attacks. Since we've gotten it a week ago (we run it most of the time) he hasn't had a bad asthma attack. The used like new was brand new for me, it just came in the wrong product box (no original packaging). It was recommended to me here by /u/UncleGurm who is the air pro-ifier.

Reddit Iconchemical_sunset 1.0
r/ProfessorsVirus prevention - air purifiers
8 months ago

I’m immunocompromised and always have an air purifier (Coway AirMega 150) running next to my lectern. It’s nearly silent on the lowest setting. I also have a larger one at home (250?) that is EXTREMELY loud, so I wouldn’t recommend a big one. The building I teach in is pretty modern, so I have to assume that the ventilation is quite good even though my classroom doesn’t have any exterior windows. I’ve been told many times I’m quiet/soft spoken (despite feeling like I’m always yelling), so masking while teaching is out of the question for me. I also tell my students on the first day of class that I am immunocompromised and therefore that if I do get sick, I am likely to get very sick and be gone for several weeks (sometimes I include the fact that my body literally cannot make antibodies, which is super fun). This info seems to stick with them, as I’ve had many students email me to let me know they’re sick and staying home because they remembered what I said. I am also pleasantly surprised that most students wear a mask for a few days when they return. I never mention masks at all and have never asked for anyone to wear them, fwiw. I also have a couple bottles of hand sanitizer in the room and use it very, very frequently (literally any time I touch a shared surface). I follow the same precautions in my office. I’ve had COVID three times, and two of the three times it was during the summer (I don’t teach summers). The third time I’m 99% sure I got it at a concert. Your mileage may vary, but I feel like my strategies work fine for me and at the very least give me peace of mind.

Reddit IconCivilized_Monke69 1.0
r/mumbaiThis is the air we breathe in Andheri
3 months ago

Coway Airmega 250 is very good highly recommend. I have 3 units in my home.

Reddit IconCompanyRemarkable381 1.0
r/BuyItForLifeThe Best Air Purifier for Home now? Have you noticed a huge difference since you started using them?
5 months ago

I’ve been loving my Coway Airmega 250S for over a year now—super quiet, catches dust and pet hair like a champ, and the air just feels fresher, especially in the bedroom. Filters last forever too if you vacuum the pre-filter regularly. Totally worth it if you’re okay with the upfront cost!

Reddit IconDarktemplar5782 1.0
r/AirPurifiersUnderstanding My Needs in an Air Purifier
11 months ago

You seem to understand what you need. You took into account your high ceilings which is good. Most CADR is measured with the average 8 foot ceiling so your numbers are higher which you already posted. Keep in mind CADR is measured at maximum fan speed, so you’ll want a purifier that can deliver CADR over your actual square footage so that way you can run the units at medium speed. Some people run them at max, but most do medium since it’s a tolerable noise level. Since you’ve been on this sub, I assume you know that purifiers are only good to clean the air in the room they’re placed in. They don’t clean air in other rooms because of the way air moves around homes, which isn’t much. I’m no expert and I’m kinda new to purifiers too and there’s much more knowledgeable people on this sub. I can’t speak to other brands, but I like my Coway Airmega 250 that I got. It says it covers up to 930 sq. Ft. And 2 air changes per hour in that amount of space at max speed. I find that the unit may be a little small for the area I’m cleaning which is the living room and kitchen. I keep it positioned between the 2 and it takes longer to clean the air in each room positioned like that vs. being placed in the actual room, but it gets the job done I feel like and I’m happy with it. Not sure how much help that was, but I would look at the Coway Airmega series. Pricy, but good units. I haven’t tried any others but I know air doctor is good but very expensive. Good luck

r/AirPurifiersOne air purifier for multiple rooms or one for each room? Recommendations?
11 months ago

Air purifiers can’t go into other rooms generally speaking, so you will need multiple purifiers. Whatever room they’re in you can expect the air to be exchanged regularly, but even with a good one in the hallway it would barley exchange the air in the rooms because of the way air circulation works. Having fans going in rooms and pushing air into the hallway to get purified is one solution, but the best solution will be multiple air purifiers. If I were you, I’d get a purifier for the computer room and bedroom. I have a pretty small house and I have a Coway Airmega 250 and I love it. I keep it between my living room and kitchen and it does a good job of purifying the air in those rooms. Sometimes I take it to my bedroom at night. It’s kinda heavy but it’s easy enough to move

r/AirPurifiersIs the consensus Coway Air Purifiers?
about 2 months ago

I’ve got a Coway Airmega 250 and I’m very happy with it. I love it. When I get extra money I’ll get another

Reddit IconDiotima245 1.0
r/AirPurifiersShould I still get a Coway?
6 months ago

I have a AirMega 250 and another cheaper unit in my "cat room" (opposite side of house). I prefer the AirMega in bedroom not as light polluting. I change the filter once a year and its around $80 for the unit.