Coway - Airmega 300S

So after spending more time looking into purifiers I went for something else. I bought a Coway Airmega 150 (for our attic bedroom) and a Coway Airmega 300s for downstairs. Both had 20% discount on their website and The 2 devices cost me less than the Daikin . Hopefully I made a good choice 😅

Aaaaand the airmega 300s is going back. I got the refund already and they're picking it up soon. I was unable to connect to its network....the main reason I bought it. Might get the Daikin still. But to be honest, the 300S was 99% of the time showing good air quality, so It might not be needed at all. It did collect quite some dust via the pre-filter though.

Same, i have 2. You can usually get good deals on slickdeals if you can wait a bit.

I’ve got a Coway 300S in the main living area of my house (kitchen, dining room, living room), and a Coway 1512 in my bedroom. Both have been great! Highly recommend Coway.

Have had Coway Airmega 300s for years

This is the coway airmega air purifier which has a coverage area of (I think) 1200 sqft. We keep it in the hallway and it actually gets to green within an hour. The aqi in my area is 222 right now (i haven't seen the aqi monitors here being sprinkled with water or anything but there is constant sprinkling of water on roads to keep the pollutants grounded) but even when the pollution was at peak, this one could purify the air to green in around similar time.

I got coway last year when I started getting breathing problems due to all the pollution. Unless we can somehow control the stubble (parali) burning, the city is doomed!

It's coway airmega 300S Currently out of stock

It's coway airmega 300S It has costed me somewhere around 40k last year

I was recently in this position too and settled on a Coway Airmega 300s and really enjoy it. It has two HEPA filters and two pre-filter screens. It has a “smart” mode so it is really quiet 90% of the time. You can often find BNIB deals on eBay and such since it is on the pricier side. I’d just make sure it’s for sure new in box and comes with everything it normally would, if you go that route.

I have an American Eskimo dog bought this exact purifier expecting a miracle- it will not trap any dog hair so I bought a real air purifier (Coway 300s) for dander and dog smell which has been great. If you have a fluff dog get a robot vacuum like Roborock to vacuum everyday it’s been a life changer

We generally don't advise a combined humidifier and air purifier unit. Pushing very moist air over mechanical filtration is not advised, as it could degrade or cause microbial growth on the filter media. Levoit wasn't even mentioned in the [old buying guide](https://www.reddit.com/r/AirPurifiers/comments/w4uhgf/air_purifier_buying_guide_read_before_asking/). We (or really rather one of the moderators here) tend not to recommend cylindrical air purifiers for particulates. This is due to a concern that cylindrical or otherwise round units may have underpowered motors which must operate at higher speeds to provide adequate air flow. This can lead to motor burnout or a shortened purifier lifespan. Additionally, these units tend to have integrated pre-filters which are not ideal. A separate permanent pre-filter is best generally, as they're easier to clean and there's less risk of damaging the HEPA media. I would say Coway has better build quality than Levoit or Winix. If you're treating for dust storms, I would increase the CADRs beyond the minimum 2/3 of a room's area (with an 8 ft. ceiling assumed). You can have all the smart features you listed if you choose a Coway purifier with an "S" appended to the model name. Most Coways look pretty nice IMO. None of these units have much activated carbon for odors, but then again it's not a primary concern for you. For your bedroom, a suitable model would be the [Coway Airmega 250S](https://cowaymega.com/products/airmega-250s). Your living room is a bit trickier if it's about 3x size of your bedroom (living room: 576 sq. ft.). Minimum CADRs here should be 384 CFM, but should probably be at least 400 CFM - 500 CFM for dust storms. Unfortunately there's no one Coway model to fit the bill. Both the [Coway Airmega 300S](https://cowaymega.com/products/airmega-300s) and [Airmega 400S](https://cowaymega.com/products/airmega-400s) have lower CADRs. In this case, you need two purifiers in the living room potentially (mix or match the models mentioned above).

First: unfortunately air purifiers aren't very good at capturing pet hair. It's very large and heavy compared to something much smaller like PM2.5. Pet hair will be captured only if it's very close to the purifier's intake. Ultimately it would be very helpful to have the length x width x height of the room so we know what Clean Air Delivery Rates (CADRs) would be appropriate. If the purifier is going to be in the same room as the baby, you need to ensure sound levels are low. Obviously distance from the purifier matters too. According to a *Pediatrics* article, [USA hospital nurseries have recommended sound limits of 50 dBA (decibels A-weighted)](https://doi.org/10.1542/peds.2013-3617). In order to maintain adequate CADRs while keeping the unit sufficiently quiet, we generally recommend "oversizing" the purifier. The first choice in consumer brands is generally **Coway** as it's higher quality. In particular, the [Coway Airmega 300](https://cowaymega.com/products/airmega-300), [Coway Airmega 400](https://cowaymega.com/products/airmega-400), and the (top of the line) [Coway Airmega ProX](https://cowaymega.com/products/airmega-prox) are premium units, all of which have a 5 years warranty. Right now, Coway units are full price but sale periods are frequent and significant. If you can wait, I would definitely do so until the prices come down. Alternatively, [Sylvane.com](http://Sylvane.com) has pretty good prices on the aforementioned models. Just remember that CADRs apply to the highest speed/fan setting only. Lower & quieter speeds will have lower CADRs which are unlisted.

Have you read our [sticky post at the top of the subreddit](https://www.reddit.com/r/AirPurifiers/comments/1jxgjwf/sticky_purifiers_and_dust_reduction/) or the [FAQs wiki page](https://www.reddit.com/r/AirPurifiers/wiki/index/faqs/) entries about dust? Air purifiers aren't good at reducing visible dust as it's large and heavy. I would always avoid Shark. It's a low quality brand and we've had multiple reports of the air quality display not working. Coway purifiers are generally the best quality in the consumer-grade market (although they're more expensive). However, you'd have to buy one with the letter *S* appended to the model name. S-letter models have app connectivity. A great value for money is the Winix C909 sold on Costco.com. It has PlasmaWave, a bipolar ionizer that may be turned on or off. The C909 will be fairly loud on the highest setting called "Turbo" - about 60 dBA according to the Decibel X Android app and it's not very energy efficient at 95W. But purifiers need to be sized by room volume - so please list your room's length x width x height. See **Rule 4**.

...different websites display different levels of expertise or due diligence? There are traditional and online media websites "reviewing" purifiers whose methodologies, criteria, or testing will vary. Many product review articles authors are journalists, not HVAC or air quality engineers. And the underlying goal of some websites may be to drive viewers towards referral or affiliate URLs to make money. You have to compare apples to apples. RTings.com has tested only 2 Coway models and 2 Winix models. There are no Smart Air, IQAir, Alen, or Medify Air units. I'm looking forward to RTings.com testing more purifier models. But right now, the test selection isn't impressive... there are a lot of Dyson purifiers. As stated on one of your other posts, we generally like Coway for the build quality, performance, and quiet operation. The ProX, 400S, 400, 300S, 300, IconS\*, and Icon\* come with a 5 years warranty. All other Airmega models have a 3 years warranty. Link: [https://cowaymega.com/pages/warranty-registration](https://cowaymega.com/pages/warranty-registration) \*We do not recommend the Icon / IconS, as they have poor CADRs for the money. The Levoit EverestAir is the best purifier Levoit makes with lots of extra features. Some of the CADRs are a bit low (373 CFM for Dust and 354 CFM for Smoke). Top sound level according to HouseFresh is 57.8 dB; note this isn't an A-weighted decibel rating. Warranty period is 2 years. Don't know how the EverestAir's build quality compares to Coway's higher end offerings.

...different websites display different levels of expertise or due diligence? There are traditional and online media websites "reviewing" purifiers whose methodologies, criteria, or testing will vary. Many product review articles authors are journalists, not HVAC or air quality engineers. And the underlying goal of some websites may be to drive viewers towards referral or affiliate URLs to make money. You have to compare apples to apples. RTings.com has tested only 2 Coway models and 2 Winix models. There are no Smart Air, IQAir, Alen, or Medify Air units. I'm looking forward to RTings.com testing more purifier models. But right now, the test selection isn't impressive... there are a lot of Dyson purifiers. As stated on one of your other posts, we generally like Coway for the build quality, performance, and quiet operation. The ProX, 400S, 400, 300S, 300, IconS\*, and Icon\* come with a 5 years warranty. All other Airmega models have a 3 years warranty. Link: [https://cowaymega.com/pages/warranty-registration](https://cowaymega.com/pages/warranty-registration) \*We do not recommend the Icon / IconS, as they have poor CADRs for the money. The Levoit EverestAir is the best purifier Levoit makes with lots of extra features. Some of the CADRs are a bit low (373 CFM for Dust and 354 CFM for Smoke). Top sound level according to HouseFresh is 57.8 dB; note this isn't an A-weighted decibel rating. Warranty period is 2 years. Don't know how the EverestAir's build quality compares to Coway's higher end offerings.

I have a CR box with 6 PC fans. The throughput is just not enough to deal with the fire smoke.. ended up turning my actual purifier’s fan speed up. I have the Coway 300. Speed 3(200CFM) worst day 2 of them running.

I’ve had Coway AirMegas, Winix, and Whirlpool Whispure, and Coway is by far the best home purifier in my opinion. I have an AirThings air quality monitor and a dust allergy, and these filters make a difference. You do need to clean the Coway prefilter regularly, but it’s easy to do. I didn’t know they sold off market filters so I’ll have to look into that because the filters can be costly.

I have 2 Coway airmegas that are super quiet that I’ve had for nearly 2 years. Do you change your filters regularly? Only one I would not recommend is Winix—I had one of the smaller models and its noise was very inconsistent and it was poorly constructed compared to the Coway Airmega and the Honeywell Whispure (a tiny model).

They do help. I have the Coway 300 and 400 for my bedroom and main living room.