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expiredGByDesign posted Mar 15, 2022 08:05 PM
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expiredGByDesign posted Mar 15, 2022 08:05 PM

Coway Airmega 400S Smart True HEPA Air Purifier (White, Covers 1560 sq. ft.)

+ Free Shipping

$383

$450

14% off
Amazon
212 Comments 155,733 Views
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Update: This popular deal is still available

Amazon.com has Coway Airmega 400S Smart True HEPA Air Purifier (White, Covers 1560 sq. ft.) for $382.50. Shipping is free.

Thanks to community member Gordonbydesign for finding this deal.

About this item:
  • Coway Airmega 400S is designed to accommodate large room sizes up to 1, 560 square feet and cleans the air at least two times per hour when used as recommended.
  • Coway Airmega Max2 filter – combined activated carbon and True HEPA filter – captures and reduces up to 99.97% of particles 0.3 microns in the air, including pollen, pollutants and other allergens. It also reduces more than 99% of volatile organic compounds and reduces fumes such as NH3 and CH3CHO. It also includes washable and permanent pre-filter to catch larger dust particles.

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by GByDesign
Community Notes
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Update: This popular deal is still available

Amazon.com has Coway Airmega 400S Smart True HEPA Air Purifier (White, Covers 1560 sq. ft.) for $382.50. Shipping is free.

Thanks to community member Gordonbydesign for finding this deal.

About this item:
  • Coway Airmega 400S is designed to accommodate large room sizes up to 1, 560 square feet and cleans the air at least two times per hour when used as recommended.
  • Coway Airmega Max2 filter – combined activated carbon and True HEPA filter – captures and reduces up to 99.97% of particles 0.3 microns in the air, including pollen, pollutants and other allergens. It also reduces more than 99% of volatile organic compounds and reduces fumes such as NH3 and CH3CHO. It also includes washable and permanent pre-filter to catch larger dust particles.

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by GByDesign

Community Voting

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Model: Airmega 400S The Smarter App Enabled Air Purifier - White

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Sort: Lowest to Highest | Last Updated 8/9/2025, 10:08 AM
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Top Comments

radejs
154 Posts
57 Reputation
FYI Air cleaners are Health Savings Account allowed purchases
ryewoods
400 Posts
97 Reputation
Very good user reviews, but Consumer Reports generally rates Coway models middlingly. They reviewed the slightly smaller Airmega 300 and found it was only Fair at removing dust, pollen, and smoke on Low speed. They also dinged it for being a little loud on High. It was Excellent at removing dust, pollen, and smoke on High speed. Competing models from Samsung, Blueair, and Alen rank higher. I've found CR reviews to not always reflect actual real life performance, so take it for what you will.
AlanG6671
14 Posts
10 Reputation
My girlfriend was always sniffling(bad allergies) and I was always snoring. I got 3 of these (1/2/basement) and I just bought another one for her office. These things have made us breathe better and live better. Love them.

211 Comments

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Original Poster
Mar 15, 2022 08:26 PM
779 Posts
Joined Apr 2010
Mar 15, 2022 08:26 PM
GByDesign
Original Poster
Mar 15, 2022 08:26 PM
779 Posts
Quote from Gt7737 :
https://slickdeals.net/share/iphone_app/t/15672556
You linked to the 400, not the S but they're both priced the same right now
Mar 15, 2022 08:31 PM
2,222 Posts
Joined Nov 2018
Mar 15, 2022 08:31 PM
Gt7737Mar 15, 2022 08:31 PM
2,222 Posts
Quote from Gordonbydesign :
You linked to the 400, not the S but they're both priced the same right now
Thank you ! I assumed "s" and smart would have been the same .. especially with the same reviews . Guess not
Original Poster
Mar 15, 2022 08:33 PM
779 Posts
Joined Apr 2010
Mar 15, 2022 08:33 PM
GByDesign
Original Poster
Mar 15, 2022 08:33 PM
779 Posts
Quote from Gt7737 :
Thank you ! I assumed "s" and smart would have been the same .. especially with the same reviews . Guess not
400 is older model, it is 'smart,' but not wifi capable
Mar 15, 2022 08:46 PM
107 Posts
Joined Dec 2019
Mar 15, 2022 08:46 PM
ejwillMar 15, 2022 08:46 PM
107 Posts
I've been debating this or Mila
1
Mar 15, 2022 09:04 PM
126 Posts
Joined Dec 2017
Mar 15, 2022 09:04 PM
TalontdMar 15, 2022 09:04 PM
126 Posts
Delivery date is showing as April 12th for me..
2
Mar 15, 2022 09:36 PM
1,029 Posts
Joined Oct 2007
Mar 15, 2022 09:36 PM
MikeyMike01Mar 15, 2022 09:36 PM
1,029 Posts
What's the value in the smart connection?
Original Poster
Mar 15, 2022 09:42 PM
779 Posts
Joined Apr 2010
Mar 15, 2022 09:42 PM
GByDesign
Original Poster
Mar 15, 2022 09:42 PM
779 Posts
Quote from MikeyMike01 :
What's the value in the smart connection?
"Smart mode with three settings, Coway Airmega smart air purifier adapts to its surroundings. Fan speed automatically adjusts based on the room's air quality and lighting conditions to improve air quality."
1

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Mar 15, 2022 10:45 PM
467 Posts
Joined Apr 2005
Mar 15, 2022 10:45 PM
lapchernMar 15, 2022 10:45 PM
467 Posts
Why should I pay triple over a winix?
3
Mar 15, 2022 10:56 PM
3,560 Posts
Joined Apr 2011
Mar 15, 2022 10:56 PM
kida182001Mar 15, 2022 10:56 PM
3,560 Posts
Quote from lapchern :
Why should I pay triple over a winix?
If you're referring to the one that sometimes go on sale at Costco, this is more powerful and covers three times more square footage, supposedly.
Last edited by kida182001 March 15, 2022 at 05:53 PM.
Mar 15, 2022 11:03 PM
707 Posts
Joined Jan 2010
Mar 15, 2022 11:03 PM
broktMar 15, 2022 11:03 PM
707 Posts
We live in a 1,350 square foot rambler. Would this cover the whole house? Or would it make more sense to buy a few smaller purifiers?
Mar 15, 2022 11:10 PM
2,020 Posts
Joined Jun 2007
Mar 15, 2022 11:10 PM
ilovecanadaMar 15, 2022 11:10 PM
2,020 Posts
Quote from MikeyMike01 :
What's the value in the smart connection?
I got it over the other model specifically for the scheduling feature. I believe the base model has a timer but I like setting a schedule and forgetting it. Especially if they are both the same price go for the S
Mar 15, 2022 11:12 PM
14 Posts
Joined Mar 2013
Mar 15, 2022 11:12 PM
AlanG6671Mar 15, 2022 11:12 PM
14 Posts
My girlfriend was always sniffling(bad allergies) and I was always snoring. I got 3 of these (1/2/basement) and I just bought another one for her office. These things have made us breathe better and live better. Love them.
1
Mar 15, 2022 11:14 PM
284 Posts
Joined Apr 2005
Mar 15, 2022 11:14 PM
VascodegamaMar 15, 2022 11:14 PM
284 Posts
Quote from ilovecanada :
I got it over the other model specifically for the scheduling feature. I believe the base model has a timer but I like setting a schedule and forgetting it. Especially if they are both the same price go for the S
Scheduling is key. You don't need it running 24/7 unless you wfh in a studio apartment.
Mar 15, 2022 11:14 PM
467 Posts
Joined Apr 2005
Mar 15, 2022 11:14 PM
lapchernMar 15, 2022 11:14 PM
467 Posts
Quote from kida182001 :
If you're referring to the one that sometimes go on sale on Costco, this is more powerful and covers three times more square footage, supposedly.
Yeah that's what I was referring to, thanks! So I guess this would be better for a living room.

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Mar 15, 2022 11:16 PM
186 Posts
Joined Nov 2020
Mar 15, 2022 11:16 PM
BraveSpaniel9510Mar 15, 2022 11:16 PM
186 Posts
We bought the 400 about 9 months ago and love it. This one literally keeps the whole open floorplan clean. We use to be able to watch the dust in the air when the sun hit just right. Haven't had that anymore.

We have the base model that you can set on smart mode. It will automatically adjust based on what's in the air. You can also change the sensitivity of the sensor that picks everything up. The smart app compatible is really a waste unless you just want to check it on your phone.
Last edited by BraveSpaniel9510 March 15, 2022 at 04:22 PM.

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