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Coway Airmega 400 True HEPA Smart Air Purifier (White)
$349
$649
46% off
+ Free Shippingat Amazon
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Update: This popular deal is still available.
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White) for $349. Shipping is free.
Thanks to Deal Hunter phoinix for sharing this deal.
Product Details:
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White) for $349. Shipping is free.
Thanks to Deal Hunter phoinix for sharing this deal.
Product Details:
- Designed to clean spaces up to 3,120 sq. ft. in 60 minutes
- Combination of a pre-filter, active carbon filter, and HEPA Filter reduces 99.97% of 0.3 micron particles, including pollen and other allergens. It also reduces volatile organic compounds and odor
- With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the room's air quality; That means your unit is energy efficient without compromising effectiveness
- When the air quality in the room remains purified for 30 minutes or more in Eco Mode, the fan will turn off to conserve energy, kicking on again when pollution is detected
- When the Airmega's built-in light and pollution sensors detect that the room has been dark and the air clean for 3 minutes, Sleep Mode reduces the purifier's noise and power consumption
Editor's Notes
Written by powerfuldoppler | Staff- About this Deal:
- Our research indicates that this deal is $183.00 less (34% savings) than the next best available price from a reputable merchant with prices starting at $532.00 at the time of this posting.
- About this Store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
- You can view Amazon's Return Policy here.
- Additional Notes:
- Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White) for $349. Shipping is free.
Thanks to Deal Hunter phoinix for sharing this deal.
Product Details:
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White) for $349. Shipping is free.
Thanks to Deal Hunter phoinix for sharing this deal.
Product Details:
- Designed to clean spaces up to 3,120 sq. ft. in 60 minutes
- Combination of a pre-filter, active carbon filter, and HEPA Filter reduces 99.97% of 0.3 micron particles, including pollen and other allergens. It also reduces volatile organic compounds and odor
- With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the room's air quality; That means your unit is energy efficient without compromising effectiveness
- When the air quality in the room remains purified for 30 minutes or more in Eco Mode, the fan will turn off to conserve energy, kicking on again when pollution is detected
- When the Airmega's built-in light and pollution sensors detect that the room has been dark and the air clean for 3 minutes, Sleep Mode reduces the purifier's noise and power consumption
Editor's Notes
Written by powerfuldoppler | Staff- About this Deal:
- Our research indicates that this deal is $183.00 less (34% savings) than the next best available price from a reputable merchant with prices starting at $532.00 at the time of this posting.
- About this Store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
- If you're not a student, there's also a free 1-Month Amazon Prime trial available.
- You can view Amazon's Return Policy here.
- Additional Notes:
- Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
Community Voting
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Top Comments
This last time I spent the money on Coway filters and can say I am happier. ultimately worth the price. I can tell the air is 'lighter' when I change the filters. More so than when I'd change out to aftermarket. The carbon also lasts a LOT longer. There is a smell in the air when the carbon stops working. It's distinct. The carbon in the Coways easily last twice as long. But this isn't a deal breaker. As the carbon in the Coways don't last as long as the HEPA part either. You can give them a good shake, to extend the life of the carbon. Doing so introduces new cracks and crevices within the pieces of carbon for the air to filter through. Be sure the vacuum it first. Shake with the carbon part of the filter pointed down. And vacuum again afterwards. Because you will get carbon dust, it's just little pieces of charcoal, all in your HEPA, reducing the lifespan.
Community Reviews
The Coway Airmega 400 is a large, smart HEPA air purifier that does a strong job clearing dust, odors, and visible haze, with auto mode and scheduling that can keep it running quietly in living spaces or bedrooms. Long-term reports are excellent, with units still working well after years of near-constant use, and the washable pre-filter helps stretch maintenance. The main drawbacks are the high cost of replacement filters, especially because the unit uses two, plus occasional complaints about chemical smells, noise at higher speeds, and app or WiFi hassles. It is a capable purifier if you can live with the upkeep and size.
Common Questions (5)
Aftermarket filters can fit and work, and several owners use them without noticing a performance difference. Some report less airflow, less carbon, or odor/chemical-smell issues compared with genuine filters, and Coway may deny warranty service if a problem is tied to a third-party filter.
It works best in the same floor or room where it's placed, not across floors or through enclosed spaces. For larger homes, multiple units are often recommended, ideally one per floor, because a single 400 may leave dead zones.
Yes. Genuine replacement filters are commonly reported around $70 on sale and up to about $115 for the pair, and the unit uses two filters. The pre-filter can be vacuumed, but the HEPA/carbon filters still need periodic replacement, often about once a year or longer depending on use.
On low, it can be quiet enough for bedroom use and even white-noise sleep, but some owners report a hum or whine at low speeds and noise above low. The 400S app model also adds schedule beeps that can't be silenced.
The WiFi/app setup can be finicky, and after a power outage it may lose connectivity and need a hard reset and re-pairing. The app is mainly used for schedules, while the non-WiFi version avoids that hassle.
AI-generated summary based on comments from the community. Updated ago
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132 Comments
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My only gripe is that it beeps multiple times at the schedule change and you can't silence it. We just make it 9pm and 9am to ensure we're awake when it beeps multiple times
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