Air Purifier for Large Room Whole Home Up to 3,285 ft², HEPA Filter for Smoke, Allergen, Pet Dander, Odor, PM(1, 2.5, 10), AQI, Turbo Eco Mode, Energy Star, 3yr Warranty, Airmega 450 Beige

I did not make this purchase out of want ??? I'm very, very sick (have been for more than a year) & I needed something effective & affordable. WORST THING? I moved into new apt. only to find my ground level unit sits right next to the main drier vent. Because it's ground level, what flows in is almost impossible to get out, and hot drier air flows in & down. I almost gave up/ I did lots of research (enough to learn what I feared)??? I'll tell you what that is in a moment. You have to do deep research on a product like this/ there's so many options & most are useless (I'm sorry but it's true). I always read until I find those rare technocratic users who truly put products through their paces. THE TRUTH? Many of the high reviews for a majority of the available units are inspired by digital features (lights & listed options). It seems the old honeywell units were legit (really pulled dust, etc.)? But? They've become flimsy & flawed (even filters no longer seating well)... I never saw one of these COWAY units listed among either "featured" products or through "highest review" search option??? A real & smart user did a head to head with multiple brands & was truly impressed with COWAY. I punched the company name in (didn't even know what they looked like)... This product is exceptional in every way. It truly hauls air through one very large multistage filter (only 1 needed as replacement yearly). It claims to do a 900ft sq. room, & I believe it. PROBLEM? A unit is only as good as the convection it can create/ This is limited by irregularities in ANY space—lest you're buying a hulking industrial unit. I'm sicker than I wanna discuss here, I'm not an average user & the stakes are deadly serious. Before I even purchase this unit, I spent 2 days in the new apt. setting up fans & feeling the currents & air flow such that if I found an appropriate unit—I'd be able to effectively cycle all air through it. I say again, I almost gave up (I could easily see one MOSTLY must buy a larger, more industrial value unit if one has truly serious problems—and I don't have the money for such a purchase). THIS UNIT DOES NOT HAVE THE "S" DESIGNATION/ IT DOES NOT UTILIZE WIFI... NO—THIS IS A GOOD THING??? WHY WOULD YOU EVER NEED THE FEATURE & IT ADDS $100 TO THE PRICE... AND? IT'S BEEN MESSING WITH PEOPLE'S WIFI MORE GENERALLY (taking it down—in fact). There's a pre-filter screen & it works. The computer keeps track of the air volume. I started to notice eye irritation the other day & I cleaned the pre-filter (EASY PEASEY). The next morning? The light indicating time for the precise cleaning was on... IT WAS RIGHT ON THE MONEY!! The main filter is massive with a micro-fit (set in easy & snug across all sides/ no loss of seal anywhere). I think the replacement is $26 & you only need 1 every year... CRAZY/ SO MUCH CHEAPER TO OPERATE ON TOP OF REALLY CLEANING LOTS OF AIR. Pulls smells fast & effectively. It keeps track of the air quality & it works (it tells you when something is introduce into the air via simple active color bar). I've been running it in highest haul setting. I brought the fan down to medium yesterday & the slowed air-flow seemed to find even more particulates (I have air moving fast everywhere with fans & I think slowing down a bit helped—ironically). On top of everything else—it's an elegant looking model. It doesn't look like—or try to be—a smart-buddy (like some smart pod with lots of useless lights). I've been poor most of my life & when I do make a purchase, I do my research. I don't have money to burn & the stakes are very, very high for me (carbon monoxide is building in my blood, suffocating me slowly & horribly). I'm fighting for life/ I need anything that can help CUS I have emphysema already & nobody really knows why 02 is accumulating? Probably a black mold infestation in last apt... WHAT A PRODUCT/ I WISH I COULD SAY I'D BUILT IT... I've done a bit of inventing in my life. I'd like to think that if I did build an air purifier? it would look & function just like this... GET IT !!! SERIOUSLY...

I needed an air purifier that could handle a large open living/dining/entryway area in my apartment in dusty/smoggy NYC. Since I was already very happy with a smaller capacity Coway purifier (AP-1512HH) in a bedroom, buying the Coway Airmega 250 was a no brainer. I've had the Airmega 250 for over a year now and it has worked flawlessly, quietly (except when it goes into overdrive when I am cooking steak,) and is easy to clean and maintain. First of all, it's fairly nice looking in a simple, unassertive way that is happy to sit quietly in the background. The smaller unit I have in the bedroom is not as attractive, IMHO. Both units are pretty much "plug and play." They both monitor the air, automatically switching to a higher fan speed when indicated. If desired, the "Auto" function can be overridden, so the fan speed can be manually set. The 250 has an automatic "nighttime" setting that goes into a temporary sleep mode if no change of air quality is detected over a period of time. This is great if the unit is in a bedroom, though it will wake itself up if it detects an environmental change. I am almost never aware of the 250, the main exception is when a smoky haze escapes the kitchen, usually when I am grilling or broiling meat. The unit then goes into "Red" alert, the fan switches to "High" and the air is cleared in a matter of minutes. The filtration system is in two parts: a permanent mesh screen "pre-filter" which needs to be dusted or washed periodically, and a HEPA inner filter which can be dusted off, but needs to be replaced at least once a year, or as necessary. A red light goes off when either of the two filters needs cleaning or replacement. I've noticed a significant reduction in settled dust on my furniture surfaces. Highly recommended. EDIT JUNE 10, 2023: This unit went into auto “red alert” as soon as the Canadian wildfire smog started to engulf New York City. We shut our windows and it took the 250 (and our bedroom unit) about an hour to go from red to yellow and back to green. What a relief to have these two units!

This air purifier does a great job. We set it up in or dinning room and within 3 hours it cleaned up the entire area of about 750 sq feet. It is very quiet as we moved it into our bedroom for 24 hours and it was very quiet and very efficient. We mostly kept it on Auto as this is the best setting that cleans the air most efficiently. The other functions work great as well. So in the end it was well worth the money we spent. $275.00 during Black Friday. Over a $100.00 savings. We highly recommend this product.

We have had the Coway Airmega 250 air purifier for about 2.5 years. We go through about one filter per year of use. I vacuum the prefilter approximately monthly, when the reminder light comes on. (Another light comes on when you need a new main filter.) The purifier serves a large area which is foyer/kitchen/dining/living room. We run it in smart mode, so it doesn't run continuously. It cycles on and if it needs to do some air cleaning, it stays on. It definitely reacts to when I am browning meat on the stove, ratcheting up the fan and changing the led color (which indicates how dirty it thinks the air is). We also have central air/furnace with its own filter, but I like having additional filtration, especially when some wildfire smoke ends up here in the Minneapolis area. I observe it is more active when we have the really bad air quality. It is nice to feel like we are able to do something to improve our air quality. It is very quiet unless it needs to kick up the filtering to a higher level. Then the fan is louder because it is running faster, but we don't find it overly loud. We sleep down a hall from where it is located and we have never noticed any noise from it. The neutral 'greige' color is nice. White doesn't work in our home, so it is nice to be able to get something that blends in. I feel this was a good investment to have some way to monitor and clean our in-home air in this era of intermittent poor air quality. It seems durable. I have not had any issue with getting the filters - I just buy the replacement 250/250s ones from the Coway store on Amazon. One of the reasons we went with this model is that Coway seems well-established, and I wanted to make sure I would be able to get filters for many years to come. This has been a solid product for us.

Works well, easy to clean BUT, it does NOT work for CIGARETTE SMOKE, as stated by another review. Whether it’s 1st, 2nd, or, 3rd hand smoke, it’s not useful for that in the slightest. Otherwise, it’s a good product.

I’ve had a variety of air filter machines over the years, this 450 version is the best quality, largest version I’ve ever owned. It’s a beast of an air filter that very well made all the way down to the filter it uses. It’s also the most high-tech as to identifying air quality and adjusting automatically. I put this one in my basement that I am remodeling and it has done a great job of cleaning the air. The initial set up is difficult to figure out. You have to remove main filter and unwrap it, in that process you remove the grill/louver part which is a flexible plastic wrap-around design, and then it’s supposed to just snap back into place and is held by magnets on one side. I’ve yet to get it all lined back up correctly, but it still works. The instructions are of little help in this regard, but once you figure out where to pull at the bottom it comes off easily. A simple sticker the says, “pull here to remove cover” would fix this issue.

The Coway Airmega is amazing! Super quiet, sleek design, and it really makes a difference in air quality. I noticed the air feels fresher within hours, and my allergies have improved a lot. It covers a large area perfectly and the smart features (like air quality indicator and auto mode) make it effortless to use. Filters are easy to change, and the overall build feels high quality. Definitely worth the investment if you care about clean, healthy air at home.

I was excited to get this. I've done extensive research and this product was listed in the top three recommendations for air purifiers. For background, I have severe allergies to tree pollen, dust, pets, etc. I have a rabbit air purifier that will clean out a room of everything in just a few hours. I had a feral outdoor cat spraying my house and the smell was getting inside - even after clean up, the smell lingered. The rabbit was my saving grace and removed all that odor. It does an amazing job with pet dander and dust, too. It kept my allergies to a mininum. But because of the price, I couldn't afford a second one... But I really needed another air purifier for the front end of my house, as that would be my temporary bedroom while family stays with me, so I opted to buy this, while I kept the rabbit for my family. Well... I've had this product a month and it has done nothing to clean my air. My allergies have been the most severe its ever been. Only when I'm in the back with the rabbit, does it subside. This thing also alerts me every three days that the pre filter needs maintenance. When I remove it, there's very little junk present. Like why am I getting a maintenance when this thing is brand new?? However, my rabbit can be jammed pack with all the disgusting junk in its pre filter and still do a better job at cleaning my air. And oh, lemme tell you, when that cat comes around, this filter will do nothing with the odor. I specifically made sure to get a purifer with a carbon filter for this purpose. And whelp, I have to move my rabbit to the front room for a few hours to help out with the smell as this Conway can't do anything by itself. This product was such a waste of money! You get what you pay for... but for $350 I expected a little more. I even have some random off brand air purifiers I got off this site, that I put in closed off smaller rooms, and for under $50 they do a better job... I doubt I'm using this product wrong, so I wanna know where all these positive reviews are coming from. It must be from normal every day use and not for extreme situations like mine. Guess I better save up and upgrade.