The Coway Airmega 200M is an air purifier intended for medium-sized rooms. Under the skin, it's all but identical to the older Coway Airmega AP-1512HH Mighty, with the same filter system comprised of three physical layers and a built-in ionizer. It also has the same particle sensor that allows it to automatically adjust fan speed depending on current air quality or even turn it off entirely if air quality is kept at an acceptable level for long enough.
Our Verdict
The Coway Airmega 200M is a very good choice for pet owners. It's fairly effective in capturing fine particles like cat dander. While you can't control the air purifier remotely using your smartphone, it does have an automatic fan speed adjustment feature. While it's a little noisy at higher fan speeds, which isn't ideal for pets that are sensitive to loud noises, it isn't too disruptive at lower speeds.
- Great overall performance.
- Automatic fan speed adjustment and 'Eco' setting.
- No companion app for full remote operation.
- Makes quite a bit of noise at higher fan speeds.
The Coway Airmega 200M is a good option to put in your bedroom. It's a little on the larger end of the scale, especially for smaller bedrooms, but it still has a relatively small footprint for a machine capable of cleaning rooms this size. Like most air purifiers, you can easily switch off the display lights. You can't operate the Coway remotely using a smartphone app, but its built-in particle sensor does still result in a hands-off user experience; the device will automatically adjust fan speed depending on measured air quality, and the separate 'Eco' mode helps minimize noise and power consumption by turning the fan off if air quality is at an acceptable level for long enough.
- Display light shutoff.
- Great overall performance.
- Automatic fan speed adjustment and 'Eco' setting.
- No companion app for full remote operation.
- Makes quite a bit of noise at higher fan speeds.
- Great overall performance.
- Automatic fan speed adjustment and 'Eco' setting.
- No companion app for full remote operation.
- Makes quite a bit of noise at higher fan speeds.
- Great overall performance.
- Automatic fan speed adjustment and 'Eco' setting.
- No companion app for full remote operation.
- Makes quite a bit of noise at higher fan speeds.
Performance Usages
Changelog
- Updated Nov 04, 2025: Version 1.0.2 of our Air Purifier Test Bench rectifies calculation errors in our existing Particle Filtration Rate test to provide more representative results of some units. For a more detailed breakdown of the changes made, see our full changelog.
- Updated Oct 31, 2024: Converted to Test Bench 1.0.1.
- Updated May 13, 2024: Review published.
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Differences Between Sizes And Variants
The Coway Airmega 200M is available in two color variants: 'Black' and 'White'. We tested the 'Black' variant.
Let us know in the comments if you come across another variant.
Popular Air Purifier Comparisons
The Coway Airmega 200M is all but identical to the Coway Airmega AP-1512HH Mighty, with the two machines sharing the same filter system, motor, and user interface. Like its older sibling, it doesn't have the same range of niceties as some alternatives, with no smartphone app or compatibility with voice commands made through Amazon Alexa or Google Assistant devices. However, if those features don't appeal to you, and you simply want an air purifier capable of cleaning medium to large-sized rooms, but with a relatively small footprint, it's certainly a good option.
Test Results
The 'Air Quality' indicator light changes color based on current particle count:
- Blue: Clean
- Dark Purple: Polluted
- Red: Highly Polluted
If you want to turn off the lights on the display, you can do so by pressing and holding the 'Ionizer' button for three seconds.
Like with the Coway Airmega AP-1512HH Mighty, this air purifier's four-stage filtration system only has three physical filters: a pre-filter for trapping larger particles, a True HEPA filter, and a Carbon filter for minimizing odors. The fourth 'stage' is the device's built-in ionizer, which imparts a negative charge to fine airborne particles, causing them to be attracted to one another. From there, they form heavier clumps that fall out of the air, where you can clean them up. The downside of ionizers is that their operation produces ozone as a byproduct, which can irritate your lungs through prolonged exposure. If you don't want to use the ionizer, you can turn it off.
You'll need to clean the pre-filter under water or vacuum off any stuck-on debris and dust every two to four weeks.
You'll need to replace the True HEPA/Activated Carbon filter every 12 months and the carbon filter every six months. These two filters are sold in a single pack and can be purchased here.