Coway Airmega 300S

$749.00 $649.00

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The Wi-Fi*-equipped Coway Airmega 300S lets you control your air purifier anywhere and anytime using your Coway Airmega mobile app. 

TRIGGER: |. | -- periodWith smart mode (auto, sleep, eco) and real-time air quality monitoring, you can rest assured your Coway Airmega is always at work.

With 1,256 square feet of coverage, the 300 model is perfect for small to midsize rooms.

Note: Coway Airmega is available for purchase, shipping and use only in the U.S. at this time.

All Coway Airmega models come with two pre-filters and two Max2 filters.

*Router frequency: Your Wi-Fi router should be set to both 2.4 and 5 GHz. In the absence of 5 GHz, you can set your router to 2.4 GHz only; 5 GHz will not work alone.

Security: Your Wi-Fi security should be set to one of the following options: Open, WEP, WPA, WPAAES, WPA2AES, WPA2TKIP or WPA2.

Enjoy Coway Airmega’s 30-day money-back guarantee, free shipping and easy monthly payment options. See details for more.

Real-time Air Quality Monitoring

Coway Airmega’s sensor reports on air quality in real-time every minute of the day.

Smart Mode

Coway Airmega adapts to you by automatically adjusting its fan and air-filtration speed.

Mobile App

Available for the Coway Airmega 400S and 300S, the Coway Airmega mobile app lets you control your air purifier remotely.

Powerful Performance

Coway Airmega can change room air up to twice per hour, removing 99.97 percent of pollutants.

Filter Levels

Coway Airmega reminds you when your dual HEPA air filter needs to be replaced, so you don’t have to check.


Room Coverage

2 air changes/hr.*
1,256 sq. ft. (117 sq. m)
4 air changes/hr.**
628 sq. ft. (58 sq. m)

Mobile App

Yes (More)


Auto Mode
Eco Mode
Sleep Mode


Washable pre-filter + Max2 filter set

(Activated carbon + Green True HEPA)

Real-Time Monitoring

Filter Life Indicator

Fan Speed

Sleep, Low, Medium, High


Coway Airmega application (1, 2, 4, 8 hours)



Size (H x W x D)

21.2 x 13.6 x 13.6 in. (53.8 x 34.5 x 34.5 cm)


21.4 lb. (9.7 kg)

Noise Level

22~52 dB

Power Consumption

57 W

The coverage area of your Coway Airmega reflects the size of the area in which the air purifier can make two air changes per hour. “One air change per hour” reflects how many times your Coway Airmega can clean an area in one hour, assuming the ceiling height is eight feet. *Coway Airmega can clean the area once every 30 minutes. **Coway Airmega can clean the area once every 15 minutes.


Customer Reviews

This product has not yet been reviewed.

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