
Coway - Airmega Jet
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Based on 1 year's data from Feb 15, 2026 How it works
Liked most:
7
0
"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."
14
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"
28
0
"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!"
"I raise pet pigeons (very very dusty) in my house and these are what I use."
11
0
"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"
"I have 2 Coway airmegas that are super quiet that I’ve had for nearly 2 years."
"Not noticeable at all under most circumstances."
16
1
"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."
Disliked most:
2
6
"on my end I can't seem to find replacement filters easily. ... They're currently sold out on Coway's UK website and Amazon UK doesn't seem to have them either."
"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"
3
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
0
1
"tried the Conway and there was so much plastic offgassing. I returned it.."
I mean what an amazing reply - this is why I post on Reddit. Yes im in the UK sorry about not mentioning that! Im totally sold - will get the coway mega air jet 🥰 Thank you so much for your detailed response and recommendations!
Up front: air purifiers aren't very good for visible dust. It's relatively large and heavy compared to something like PM2.5. Therefore it tends to fall and settle on surfaces unless very close to the intake. That being said, you will capture more dust if you "oversize" the purifier. And if you have pollen allergies, we also recommend oversizing. Coway is generally one of the best consumer-grade brands. The [Coway Airmega Jet](https://en.coway.com/products/airmega-jet-1) would be great, but on my end I can't seem to find replacement filters easily. They're currently sold out on Coway's UK website and Amazon UK doesn't seem to have them either. Uses 50 W on the highest setting and CADR is 402 m³/h. The next best choice might be the [Coway Airmega Mighty](https://en.coway.com/products/airmega-mighty-1). It uses a bit more energy at 82 W (as listed under Performance & Controls) on the highest setting and CADR is 421 m³/h. Keep in mind the Mighty uses an ionizer which can be switched on or off. We recommend keeping the ionizer off if you have pet birds or small animals. CADR may decrease if the ionizer is turned off, but it shouldn't be a significant drop.
I would recommend the [Coway Airmega Jet](https://en.coway.com/products/airmega-jet-1). It's more energy efficient (50 W) and may be a bit quieter (top sound level: 50 dB) than the Airmega Mighty. Keep in mind the CADRs listed for purifiers apply to the highest airflow speed/setting only. Lower settings have lower CADRs, which reduces cleaning effectiveness. There's a little bubble in the bottom left corner of the product page offering 5% off if you sign up for Coway's e-mails.
I had to look through your profile for clues - I'm guessing you're in the UK? Shark is low quality. They're dishonest in their marketing (e.g., "NeverChange" filters schtick is bogus). We've seen numerous problems with the air quality display not working. And if a model is discontinued, filter availability afterwards can be pretty short. I assume by "dust", you're allergic to dust mite allergens? If you haven't already, you'll probably need to take multiple approaches to controlling dust mites. This includes washing bedding in hot water every week, using allergen covers on mattresses & pillows, wet-dusting with quality microfiber cloths, and keeping relative humidity (RH) below 50% for prolonged periods. Dust mites can't survive in low humidity environments. With significant allergies, I'd use a bagged vacuum with a HEPA exhaust filter such as Miele or Sebo. Bagless vacs are often leaky. Obviously an air purifier will only help with airborne allergens and not the ones settled on various surfaces. **For rooms measured in meters, I would seek out a Clean Air Delivery Rate (CADR) 6 times greater than the room's volume. So** ***if*** **your ceiling height is 2.4 meters, this means your room's volume is 60 m****^(3)****. 60 m****^(3)****/h × 6 = 360 m****^(3)****/h. You need a CADR of at least 360 m****^(3)****/h.** Coway is one of the highest quality consumer-grade brands. And yes, they're more expensive. However, Coway units tend to be more energy efficient and quieter than others. A recommended model would be the [Coway Airmega Jet](https://en.coway.com/products/airmega-jet-1). Top CADR is 402 m^(3)/h. The [replacement filter is £59.99 directly from Coway](https://en.coway.com/products/airmega-jet-filters?variant=40840000077917) (GreenHEPA + activated carbon). Filter set is a bit cheaper on Amazon currently. If you were to go with Levoit, I'd buy *two* [Levoit Vital 100S](https://www.amazon.co.uk/Purifiers-Bedroom-Washable-Quality-Allergens/dp/B0CLY1ZG1F/?th=1) units. This is because top CADR is only 243 m^(3)/h. Important: keep in mind the CADRs listed for these purifiers applies to the highest airflow/speed setting only. Lower settings have lower CADRs, which reduces cleaning effectiveness.
No, Dyson is one of the worst! The HP09 has terrible Clean Air Delivery Rates (CADRs). They just know how to market effectively. As **Rule 4** and the AutoModerator comment repeats, it's helpful to know the ceiling height. I'll assume it's 2.4 meters. 60 m^(2) x 2.4 = 144 m^(3). For rooms measured in meters, CADR should be at least 3 times a room's volume (in m^(3)). So the minimum CADR should be 432 m^(3)/h. If you have [allergies, health conditions, high pollution, etc.](https://www.reddit.com/r/AirPurifiers/wiki/index/how_to_choose_an_air_purifier_for_particulates/#wiki_when_higher_than_normal_cadrs_may_be_needed), multiply the room's volume by 4-6. So CADRs of 576 - 864 m^(3)/h. Coway is a high quality brand that's relatively quiet. I don't know exactly where you are, so I don't know what's available to you. But the [Coway Airmega 400](https://www.amazon.co.uk/purifier-restaurant-certified-HyperCaptive-filtration/dp/B099S9Y285) would be a very good fit (Amazon UK website linked). If you can't find that, the Coway Airmega 300 might suffice... although you may want to supplement it with a smaller Coway model like the Coway Airmega Jet.
I use horse bedding pellets from Tractor Supply, I pour them on the bottom of the litter bin and then put a bunch of hay on top. It works pretty good, someone on here said they found something even better but I forget the name. As far as air purifiers? Absolutely. A great air purifier sucks up so much fur - not perfect, but I vacuum mine every day so it’s easy to see the good work it does. It’s a Coway Mega. Works very nicely. If they’re shedding fur is crazy then they may be shedding, brushing will always make things easier but the purifier is great
Coway air mega has been excellent. Have several units around the house.
I had the Coway air mega, or something like that. It’s a 200 plus rectangle that sits in my storage room cause it does not reduce dust in any way. In my 200 square foot studio, it’s more than enough on paper. Spent 150. Built corsi rosenthal box. With that and my robot vacuum running once a night while I sleep dust is a thing of the past.
Coway has a better reputation than the models Costco carries. Love our Air Mega. Bought directly from Coway at a steep discount. Just have to wait for sales.
Thirding this one!! Our are great
I have a coway air mega and it’s fantastic. I had a blue air prior to coway and it had this whiny sound after couple months of use.
I like this one too. It’s easier to maintain than corsi rosenthal boxes and is less noisy.
Coway Air Mega's are great. Blueair's larger units are equally great - with both DO not buy their filters directly from them - way overpriced - Amazon has generic equivalents that I have been using and have performed great (have air testers in home).
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