Coway Airmega Purifiers Matched to Your Room Size
Every figure on this page is quoted from the Amazon listing for that model. Scores are the average rating Amazon buyers left. Nothing here was handled or measured by us.
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Coway air purifiers for home use are sold under the Airmega name, and the right one depends mostly on room size. A gaming room or home theater wants a purifier that clears dust, smoke and pet dander without a fan roar drowning out the audio, and several Airmega models list noise levels around 22 dB at their lowest setting. Coverage ranges from 810 square feet on the compact Airmega 100 to 3,120 square feet on the Airmega 400.
This article compares six Coway models: the Airmega Mighty AP-1512HH, its successor the Mighty2, the Airmega 100, 250, 350 and 400. They differ in coverage, filter setup, automatic modes, energy use and warranty length. The listings for the Mighty, Mighty2 and Airmega 100 are thin, so we note where details are missing. We compared listings and specifications rather than running the purifiers ourselves.
JOB SHEET
Which Coway Air Purifier Should You Buy
Best for: Quiet whole-home cleaning with efficiency
Pros
- Up to 2,640 sq ft
- As low as 21.6 dB
- Energy Star certified
- CADR published
Cons
- PM10 sensor, not finer
- Noise figure listed two ways
Best for: Open-plan homes and large theaters
Pros
- Up to 3,120 sq ft
- Washable pre-filter
- Sleep and Eco modes
- 5-year warranty
Cons
- Highest listed wattage, 66 W
Best for: Mid-size gaming rooms and bedrooms
Pros
- Up to 1,748 sq ft
- Air quality monitor
- Auto and Eco modes
- 3-year warranty
Cons
- Filter details thin in listing
- A proven mid-size purifier for a gaming room or bedroom: Airmega Mighty AP-1512HH
- The newer version of the Mighty for similar rooms: Airmega Mighty2
- Open-plan living spaces and very large rooms: Airmega 400
- Small offices, dorms and compact bedrooms: Airmega 100
- Large living rooms that need fast cleaning: Airmega 250
- Quiet, energy-efficient large-room cleaning: Airmega 350
No. 01
of 6
Coway
COWAY Air Purifier for Home Up to 1,748 ft² (Airmega Mighty AP-1512HH)
4.3
out of 5
Amazon buyer average
Affiliate link. Price and stock live at Amazon and change there, not on this page.
The COWAY Air Purifier for Home Up to 1,748 square feet is the Airmega Mighty AP-1512HH, Coway’s long-running compact tower. The title lists a HEPA filter for smoke, allergies, pet dander and odor, an air quality monitor, Auto and Eco modes, a timer, a filter indicator and a 3-year warranty.
It measures 9.6 x 16.8 x 18.3 inches and weighs 12.3 pounds, small enough to tuck beside a desk or TV stand. The listing does not break out the filter stages, noise level or wattage, so we cannot compare it directly on quietness with the Airmega 250, 350 and 400.
It suits a gaming room, bedroom or home office in the mid-size range. If you want the newest version of this design, the Mighty2 is its successor; if your room is very large, move up to the 350 or 400.
- Coverage up to 1,748 sq ft
- Air quality monitor, Auto and Eco modes
- 3-year warranty
No. 02
of 6
Coway
COWAY Airmega Mighty2 Air Purifier
4.2
out of 5
Amazon buyer average
Affiliate link. Price and stock live at Amazon and change there, not on this page.
Best for
Mighty buyers wanting the newer version
Pros
- Up to 1,800 sq ft
- HEPA plus active carbon
- Next gen of AP-1512HH
Cons
- Features not detailed in listing
- Heavier than original
The COWAY Airmega Mighty2 Air Purifier (AP-1512N(W)) is billed as the next generation of the AP-1512HH. Its title claims coverage up to 1,800 square feet and an IEST-certified HEPA filter paired with active carbon for allergies, smoke, dust, pets and mold.
It measures 9.3 x 16.9 x 17.9 inches, close to the original, but weighs 15.2 pounds, about three pounds more. The listing does not detail modes, noise level, wattage or warranty, so if those matter, check the product page images before choosing it over the original Mighty.
It suits buyers who liked the Mighty’s footprint and want the newer model with named carbon filtration for odors. Until the listing gives more detail, the original Mighty remains the better documented option.
- Coverage up to 1,800 sq ft
- IEST-certified HEPA plus active carbon
- 15.2 pounds
No. 03
of 6
Coway
COWAY Air Purifier for Home Up to 3,120 ft² (Airmega 400)
4.3
out of 5
Amazon buyer average
Affiliate link. Price and stock live at Amazon and change there, not on this page.
The COWAY Air Purifier for Home Up to 3,120 square feet is the Airmega 400 (AP-2015F), the largest-coverage model here. Coway says it cleans that area in 60 minutes using its HyperCaptive system of a washable pre-filter, active carbon filter and HEPA filter that reduces 99.97 percent of 0.3 micron particles, plus VOCs and odor.
Smart Mode adjusts fan speed based on air quality. Eco Mode turns the fan off after 30 minutes of clean air and restarts it when pollution is detected. Sleep Mode uses light and pollution sensors to cut noise and power once the room has been dark and clean for three minutes, which is handy for a home theater during a movie. The listing gives 22 dB noise and 66 watts, and it carries a 5-year warranty, the longest here.
It suits open-plan homes, basements and large media rooms. For a single gaming room it is more machine than you need.
- Coverage up to 3,120 sq ft in 60 minutes
- Washable pre-filter, carbon and HEPA
- Smart, Eco and Sleep modes
- 5-year warranty
No. 04
of 6
Coway
COWAY Air Purifiers for Home up to 810 ft² (Airmega 100)
4.4
out of 5
Amazon buyer average
Affiliate link. Price and stock live at Amazon and change there, not on this page.
Best for
Large living rooms and home theaters
Pros
- 930 sq ft in 30 minutes
- Washable pre-filter
- Rapid and Smart modes
Cons
- No Sleep mode listed
Best for
Small offices and compact bedrooms
Pros
- Up to 810 sq ft
- HEPA and carbon filter
- Night light
- Compact footprint
Cons
- 2-year warranty
- Smallest coverage
The COWAY Air Purifiers for Home up to 810 square feet is the Airmega 100 (AP-0823E), the compact option. Its title lists HEPA and carbon filtration for smoke, allergies, pet dander and odor, an AQI monitor, Auto Mode, a timer, a filter indicator and a night light.
At 8.66 x 8.66 x 15.55 inches and 7.5 pounds it is the smallest and lightest model here, easy to set on a desk or shelf. The warranty is 2 years, shorter than the other models. The listing does not give noise level or wattage.
It suits a small gaming nook, dorm, office or bedroom. In a larger room it will run harder to keep up, so step up to the Mighty or 250 for bigger spaces.
- Coverage up to 810 sq ft
- HEPA and carbon filter
- Night light and AQI monitor
No. 05
of 6
Coway
COWAY Air Purifiers for Home Large Room (Airmega 250)
4.8
out of 5
Amazon buyer average
Well rated
4.6 or better out of 5 on Amazon
Affiliate link. Price and stock live at Amazon and change there, not on this page.
The COWAY Air Purifiers for Home Large Room model is the Airmega 250. Coway rates it for 930 square feet in 30 minutes or 1,860 square feet in 60 minutes, so it cleans a typical living room or theater quickly.
Its HyperCaptive system pairs a washable pre-filter, activated carbon and HEPA filtration to reduce 99.97 percent of 0.3 micron particles and 99 percent of VOCs and odor. A 24/7 air quality indicator drives Smart Mode, and Rapid Mode runs at maximum power until the air is clean. The listing gives 22 dB noise and 64 watts, with a 3-year warranty.
It suits large living rooms and home theaters where you want a quick clean before guests arrive. The listing does not mention a Sleep Mode, so bedroom users may prefer the 400 or 350.
- 930 sq ft in 30 minutes, 1,860 sq ft in 60
- Washable pre-filter, carbon and HEPA
- Rapid and Smart modes
No. 06
of 6
Coway
COWAY Air Purifier for Large Room (Airmega 350)
4.6
out of 5
Amazon buyer average
Well rated
4.6 or better out of 5 on Amazon
Affiliate link. Price and stock live at Amazon and change there, not on this page.
The COWAY Air Purifier for Large Room is the Airmega 350, rated for up to 2,640 square feet in 60 minutes with Coway’s HyperVortex system. It is the only model here whose listing publishes CADR figures: 376 for dust, 352 for smoke and 450 for pollen.
Its 3-in-1 filter combines a vacuumable pre-filter, activated carbon and HEPA, reducing up to 99.97 percent of 0.3 micron particles and more than 99 percent of VOCs. The air quality monitor detects particles down to PM10, Auto Mode adjusts speed, and a light sensor turns off the display light at night. It is Energy Star certified, draws 62 watts and carries a 3-year warranty. The listing quotes noise as low as 21.6 dB in one place and 21.5 dB in another.
It suits large gaming rooms, theaters and open spaces where low noise and efficiency matter most. The Airmega 400 covers more area; the 350 is the quieter, more efficient choice.
- Up to 2,640 sq ft in 60 minutes
- CADR 376 dust, 352 smoke, 450 pollen
- Energy Star certified, 62 watts
What Sets These Models Apart
| Model | Max coverage | Lowest listed noise | Warranty |
|---|---|---|---|
| Airmega Mighty AP-1512HH | 1,748 sq ft | Not specified | 3 years |
| Airmega Mighty2 | 1,800 sq ft | Not specified | Not specified |
| Airmega 400 | 3,120 sq ft | 22 dB | 5 years |
| Airmega 100 | 810 sq ft | Not specified | 2 years |
| Airmega 250 | 1,860 sq ft | 22 dB | 3 years |
| Airmega 350 | 2,640 sq ft | 21.5 to 21.6 dB | 3 years |
Figures in this table are copied from the Amazon listings for these models.
NOTES
Buying Tips for Coway Air Purifiers
Size up, not down. Coverage figures describe how much area a purifier can clean in an hour at full speed. Picking a model rated well above your room size lets it run on a lower, quieter setting, which matters in a gaming room or theater. For a 300 square foot room, the Airmega 100 works, but the Mighty or 250 will do it more quietly.
Think about filter upkeep. The Airmega 250 and 400 use washable pre-filters and the 350 has a vacuumable one, which catch hair and dust before it reaches the HEPA filter and extends its life. Replacement filters are an ongoing cost, so check availability before you buy; our Coway air filter guide covers the replacement options.
Use the automatic modes. Smart or Auto Mode ramps up when you are cooking snacks or when dust stirs up, and Sleep or Eco modes cut noise and power when the air is clean. For more on the brand’s lineup beyond these six, see our Coway air purifier overview.
FAQ
Which Coway air purifier is best for a large room?
The Airmega 400 covers the most, up to 3,120 square feet. The Airmega 350 covers up to 2,640 square feet and is Energy Star certified.
What is the difference between the Coway Mighty and Mighty2?
The Mighty2 is billed as the next generation of the AP-1512HH, with slightly larger coverage (1,800 vs 1,748 sq ft) and named HEPA plus active carbon filtration. It is also heavier.
Which Coway models have a washable pre-filter?
The Airmega 250 and 400 listings mention washable pre-filters. The Airmega 350 has a vacuumable pre-filter.
How quiet are Coway air purifiers?
The Airmega 250 and 400 list 22 dB, and the Airmega 350 lists as low as 21.5 to 21.6 dB at their lowest settings. The other listings do not specify.
Which Coway has the longest warranty?
The Airmega 400, with a 5-year warranty.
