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expired Posted by htp182 | Staff • Nov 22, 2023
expired Posted by htp182 | Staff • Nov 22, 2023

Coway Airmega 400 True HEPA Smart Air Purifier w/ 1560 sq. ft. Coverage (White)

+ Free Shipping

$343

$507

32% off
Amazon
29 Comments 20,827 Views
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Deal Details
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White, AP-2015F, 1,560 Sq Ft Coverage) on sale for $342.99. Shipping is free.

Thanks to Deal Hunter htp182 for finding this deal.

Key Features:
  • Designed to accommodate large room sizes up to 1,560 square feet.
  • Combination of a washable pre-filter, activated carbon filter, and Green True HEPA Filter effectively reduces 99.999% of 0.01-micron particles in the air, including pollen, pollutants, and other allergens; It also reduces 99% of volatile organic compounds and odor
  • The air filter indicator tells you when the filters need to be replaced
  • 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

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
    • This offer is $20.86 less than the previous Frontpage Deal which received +103 votes from the community.
  • About this product:
    • Rating of 4.6 from over 5,840 Amazon customer reviews.
  • About this store:
  • Additional Note:

Original Post

Written by htp182 | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has Coway Airmega 400 True HEPA Smart Air Purifier (White, AP-2015F, 1,560 Sq Ft Coverage) on sale for $342.99. Shipping is free.

Thanks to Deal Hunter htp182 for finding this deal.

Key Features:
  • Designed to accommodate large room sizes up to 1,560 square feet.
  • Combination of a washable pre-filter, activated carbon filter, and Green True HEPA Filter effectively reduces 99.999% of 0.01-micron particles in the air, including pollen, pollutants, and other allergens; It also reduces 99% of volatile organic compounds and odor
  • The air filter indicator tells you when the filters need to be replaced
  • 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

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
    • This offer is $20.86 less than the previous Frontpage Deal which received +103 votes from the community.
  • About this product:
    • Rating of 4.6 from over 5,840 Amazon customer reviews.
  • About this store:
  • Additional Note:

Original Post

Written by htp182 | Staff

Community Voting

Deal Score
+29
Good Deal
Visit Amazon

Price Intelligence

Model: Coway Airmega 400 True HEPA Air Purifier with 1560 sq. ft. Coverage

Deal History 

Sale Price
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Sort: Lowest to Highest | Last Updated 6/14/2025, 10:18 AM
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Top Comments

The listing is for the 400 not 400S. The phone smart feature is actually terrible and will frustrate you with it's constant disconnects, privacy prompts, etc. It's got to be one of the worst implementation; get the 400 to save all the potential troubles with the app.
I use this for my entire basement. I've used it for 2 years. Got it in sale for $250 back then. I was SHOCKED to look at the price now. Same item, +150%msrp
The 400 (not 400S) is also "smart" in that it has a smart setting where it will adjust the speed based on the air quality and turn itself off at night. It literally says the word "Smart" as one of the settings for the fan speed, so I think that is the reference in the title here.

28 Comments

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Nov 22, 2023
103 Posts
Joined Nov 2010
Nov 22, 2023
Randmness
Nov 22, 2023
103 Posts
Deal dead? Seems like only the non-Smart 400 is $342.

EDIT: Misread the title :smacks head:
Last edited by Randmness November 23, 2023 at 06:08 AM.
Nov 23, 2023
217 Posts
Joined Dec 2008
Nov 23, 2023
xdragon
Nov 23, 2023
217 Posts
The listing is for the 400 not 400S. The phone smart feature is actually terrible and will frustrate you with it's constant disconnects, privacy prompts, etc. It's got to be one of the worst implementation; get the 400 to save all the potential troubles with the app.
Nov 23, 2023
12 Posts
Joined Mar 2020
Nov 23, 2023
auditinprogress
Nov 23, 2023
12 Posts
Quote from Randmness :
Deal dead? Seems like only the non-Smart 400 is $342.
The 400 (not 400S) is also "smart" in that it has a smart setting where it will adjust the speed based on the air quality and turn itself off at night. It literally says the word "Smart" as one of the settings for the fan speed, so I think that is the reference in the title here.
Nov 23, 2023
103 Posts
Joined Nov 2010
Nov 23, 2023
Randmness
Nov 23, 2023
103 Posts
Quote from xdragon :
The listing is for the 400 not 400S. The phone smart feature is actually terrible and will frustrate you with it's constant disconnects, privacy prompts, etc. It's got to be one of the worst implementation; get the 400 to save all the potential troubles with the app.
Ahh I thought the 400S was for Smart. Sorry about that.

I have a couple of the Coway 250S (also wifi connected) and like using the scheduling feature. The best way to use these is to set it to a fixed speed, and forget it. The "smart" fan setting will react to changes, but after a certain amount of time, it'll turn off and go into energy saving mode (turning on periodically after that.) In this mode, if they dont sense air changes, they may barely run at all. Since they sit in a portion of a room, the quality of the air around the sensor may not represent the room. I wish there were a way to set a minimum speed for the smart setting versus the purifier turning off completely.

With the S-model schedulers, I force all of the purifiers on mid-day for a couple hours (at max setting), and at night (10PM - 9AM); they sit in the "smart" setting (ie barely running) for the other periods of the day. Since its also wifi connected, you can also go back and see the history of the air quality. If you are into data, its cool to see how the air quality can deteriorate when doing certain things (cooking, 3d printing, etc etc); you can set up push notifications for this as well. The 250S has more detailed metrics than the 300S, so I wonder if the 400S is the same (the 300/400 may be a generation older than the 250S - not sure.)

All that being said, at $340, buying two of the smaller air purifiers (like the Coway Mighty or Winix) will perform better (and be cheaper) than this.
Last edited by Randmness November 23, 2023 at 06:22 AM.
Nov 23, 2023
2,907 Posts
Joined Nov 2005
Nov 23, 2023
BrainDoc
Nov 23, 2023
2,907 Posts
Quote from xdragon :
The listing is for the 400 not 400S. The phone smart feature is actually terrible and will frustrate you with it's constant disconnects, privacy prompts, etc. It's got to be one of the worst implementation; get the 400 to save all the potential troubles with the app.
I've had the 400S for years now and have never had one issue with it. I don't use the app much because it's on a set schedule but it's always worked well.
Nov 23, 2023
829 Posts
Joined May 2009
Nov 23, 2023
Gilgamush
Nov 23, 2023
829 Posts
Quote from BrainDoc :
I've had the 400S for years now and have never had one issue with it. I don't use the app much because it's on a set schedule but it's always worked well.
That's the thing. Only the app lets you set a schedule.
Nov 23, 2023
33 Posts
Joined Jun 2008
Nov 23, 2023
blegeg
Nov 23, 2023
33 Posts
I bought this when it went on sale in the summer, it's been pretty good.

While not smart it does remember the settings and on/off so you can put it on a smart plug and time it that way. This is nice because many digital control devices (eg fans) don't turn back on, but this does.

The thing you miss with a plug vs the smart version is you can't set specific power settings on a schedule. Just on or off. But I have had it on the lowest setting (non smart/sleep) and schedule it to run through the day and it has met my needs.

Being able to set it to the highest when I need it (cooking, etc) and setting it back down has been convenient enough.

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Nov 23, 2023
38 Posts
Joined Jun 2020
Nov 23, 2023
Georgie61
Nov 23, 2023
38 Posts
Quote from Randmness :
Ahh I thought the 400S was for Smart. Sorry about that.

I have a couple of the Coway 250S (also wifi connected) and like using the scheduling feature. The best way to use these is to set it to a fixed speed, and forget it. The "smart" fan setting will react to changes, but after a certain amount of time, it'll turn off and go into energy saving mode (turning on periodically after that.) In this mode, if they dont sense air changes, they may barely run at all. Since they sit in a portion of a room, the quality of the air around the sensor may not represent the room. I wish there were a way to set a minimum speed for the smart setting versus the purifier turning off completely.

With the S-model schedulers, I force all of the purifiers on mid-day for a couple hours (at max setting), and at night (10PM - 9AM); they sit in the "smart" setting (ie barely running) for the other periods of the day. Since its also wifi connected, you can also go back and see the history of the air quality. If you are into data, its cool to see how the air quality can deteriorate when doing certain things (cooking, 3d printing, etc etc); you can set up push notifications for this as well. The 250S has more detailed metrics than the 300S, so I wonder if the 400S is the same (the 300/400 may be a generation older than the 250S - not sure.)

All that being said, at $340, buying two of the smaller air purifiers (like the Coway Mighty or Winix) will perform better (and be cheaper) than this.
Regarding what you said about running 2 smaller Coways; I've had a 400 for 2 years now, and Amazon delivered my 2nd 400 just yesterday. (Not the wifi model,)

Should I return this new purchase, and buy a smaller one? Beside helping w/viruses, my area is dry and dusty plus I'm on a major hwy. any thought are appreciated!
Nov 23, 2023
277 Posts
Joined May 2018
Nov 23, 2023
FeorH
Nov 23, 2023
277 Posts
I use this for my entire basement. I've used it for 2 years. Got it in sale for $250 back then. I was SHOCKED to look at the price now. Same item, +150%msrp
Nov 23, 2023
129 Posts
Joined Sep 2010
Nov 23, 2023
thinkthis
Nov 23, 2023
129 Posts
Quote from Georgie61 :
Regarding what you said about running 2 smaller Coways; I've had a 400 for 2 years now, and Amazon delivered my 2nd 400 just yesterday. (Not the wifi model,)

Should I return this new purchase, and buy a smaller one? Beside helping w/viruses, my area is dry and dusty plus I'm on a major hwy. any thought are appreciated!
No, keep it. It's annoying to have a bunch of different filter types. If you can just get multiple 400 purifiers then you can just stock one filter type and your life will be so much easier. This exact model is super popular and there are a zillion cheap air filters for it from third parties.
2
Nov 23, 2023
103 Posts
Joined Nov 2010
Nov 23, 2023
Randmness
Nov 23, 2023
103 Posts
Quote from Georgie61 :
Regarding what you said about running 2 smaller Coways; I've had a 400 for 2 years now, and Amazon delivered my 2nd 400 just yesterday. (Not the wifi model,)

Should I return this new purchase, and buy a smaller one? Beside helping w/viruses, my area is dry and dusty plus I'm on a major hwy. any thought are appreciated!
Assuming similar total CFM, multiple air purifiers will always clean better than a single unit.

ConsumerAnalysis has a good explanation on this:
https://www.consumeranalysis.com/...ga-review/

Quote :
In 300+ sq. ft. spaces a high CFM unit like the AirMega and a 250 CFM unit like the Mighty are equally effective. In smaller spaces, the AirMega will absolutely clean the air faster because of its higher CFM. But in larger spaces (300+ sq. ft.) it will clean the air just as fast as 250 CFM units.

Why and how? It has to do with the fact that one AirMega at approx. 430 CFM is still only one air purifier representing a single location in the room where dirty air can be taken into the air purifier and clean air is outputted back into the room. Our testing showed that multiple lower CFM (250 CFM) units spread out around a large room are much more effective than a single high CFM air purifier like the AirMega.
The Coway Mighty can be had for $140. You could pick up two and have more air scrubbing capability (about 15% more CFM before bringing up the fact that multiple units clean better) for less than the price of this unit.

Ignoring that, I think the smaller units have more placement options. The 300/400 require both sides to be open while the smaller units only need the front to be open.

Quote from thinkthis :
No, keep it. It's annoying to have a bunch of different filter types. If you can just get multiple 400 purifiers then you can just stock one filter type and your life will be so much easier. This exact model is super popular and there are a zillion cheap air filters for it from third parties.
Some of the newer/smaller Coways (230, 250S, Mighty S, not sure what else) use the same Max2 filter. The 300/400 just uses two of them for each unit vs one per unit on the smaller ones. I wouldn't get caught up on the activated carbon on these (it's not very effective.)
Last edited by Randmness November 23, 2023 at 10:20 AM.
Nov 23, 2023
724 Posts
Joined Dec 2021
Nov 23, 2023
LastButNotLeast
Nov 23, 2023
724 Posts
The only thing I don't like about it is that, when the fan starts, it starts on high. If I'm asleep, it wakes me up, so I just keep in on Low at night (which defeats the purpose of a Sleep setting).
Nov 23, 2023
5,440 Posts
Joined Jan 2004
Nov 23, 2023
ranova
Nov 23, 2023
5,440 Posts
Quote from xdragon :
The listing is for the 400 not 400S. The phone smart feature is actually terrible and will frustrate you with it's constant disconnects, privacy prompts, etc. It's got to be one of the worst implementation; get the 400 to save all the potential troubles with the app.
Home assistant integration with the 400s works well FYI
Nov 23, 2023
536 Posts
Joined May 2010
Nov 23, 2023
OrionChox
Nov 23, 2023
536 Posts
Got the black one for this price a couple days ago. Used w the amex 40% off. Thanks

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Nov 24, 2023
128 Posts
Joined Jul 2022
Nov 24, 2023
SharpPlant2882
Nov 24, 2023
128 Posts
Quote from thinkthis :
No, keep it. It's annoying to have a bunch of different filter types. If you can just get multiple 400 purifiers then you can just stock one filter type and your life will be so much easier. This exact model is super popular and there are a zillion cheap air filters for it from third parties.
Thank you so much for your help. I need a bit more now! = ) Last night, I set up my new 400 in a super dusty room, put it on the smart sensor and shook a bunch of blankets next to it. It took forever for it to adjust to the highest speed and turn purple. It wasn't even a dark purple.

I keep checking it and moving things around the room to see the light change, it stays blue more than anything. Now I have it on just the high speed setting. It's in a back bedroom and there's a treadmill, and odd/ends junk.

My living room 400 is always turning purple when people walk by or such. (I most definitely took the plastic of the filters too! haha ) Any thoughts? There are only two of us here. No pets. Any thoughts? Thank you!
1

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