Coway Airmega 400S (Graphite)

$849.00 $749.00
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The Wi-Fi*-equipped 400S lets you control your Coway Airmega smart air purifier anywhere, anytime using the Coway Airmega mobile app, including smart mode (auto, sleep, eco) and real-time air quality monitoring. 

TRIGGER: |. | -- periodWith 1,560 square feet of coverage, the Coway Airmega 400S and 400 models offers the best air-purifying capacity and are designed to be used in larger spaces.

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 HEPA 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.

Improve your air with a dual HEPA air purifier, thanks to 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 smart air purifier sensor monitors and reports air quality in real-time all day and night.

Smart Mode

Coway Airmega automatically adjusts fan and air-filtration speed for auto, sleep and eco settings based on real-time air quality conditions.

Alexa Capability

Coway Airmega integrates your Amazon Alexa products, so you can control your HEPA air purifier with your voice.

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 Alerts

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

Specifications

Room Coverage

2 air changes/hr.*
1,560 sq. ft. (145 sq. m)
4 air changes/hr.**
780 sq. ft. (72 sq. m)

Mobile App

Yes (More)

SmartMode

Auto Mode
Yes
Eco Mode
Yes
Sleep Mode
Automatic

Filter

Washable pre-filter + Max2 filter set

Filter

Real-Time Monitoring

Filter Life Indicator

Fan Speed

Sleep, Low, Medium, High

Timer

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

Scheduler

Yes

Size (H x W x D)

22.8 x 14.8 x 14.8 in.(58.0 x 37.6 x 37.6 cm)

Weight

24.7 lb. (11.2 kg)

Noise Level

22~52 dB

Power Consumption

66 W

The coverage area of the Coway Airmega reflects the size of the area in which the air purifier can make two air changes per hour. “Air changes per hour” reflects how many times your Coway Airmega can clean a given 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.

Downloads

User manual

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Coway Airmega Application
Apple app store icon Airmega google play icon

Customer Reviews

DanM
Excellent air purification

Because I have severe allergies, I purchased a Coway Airmega 400S about 4 months ago to help lessen dust, allergens, and pet dander in my home. From almost the first day, the difference in air quality has been amazing. I use this in an open concept living/dining area and notice less dust on surfaces, and my allergy symptoms are definitely improved. I clean the pre-filters about every 2 weeks, and I am always amazed at what is collected. The unit is very sturdy and easy to operate, and I find it very quiet on both the low and medium settings. The high setting is a bit more noisy, but nowhere near the level of some other brands I have owned over the years. Multiple visitors have commented on how clean or fresh the air smells. The WiFi app is pretty good but sometimes takes a couple of tries to connect to the unit, and the control panel on the unit is very easy to operate. Filters are very easy to access and clean as well, and the replacement costs seem reasonable. I am so happy with this unit that I purchased a second Coway unit for the bedroom. (show less) Because I have severe allergies, I purchased a Coway Airmega 400S about 4 months ago to help lessen dust, allergens,

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