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phoinix | Staff 10.2K Views
Apr 10, 2026 2:48 AM

Coway Airmega 300 Smart HEPA Air Purifier (White)

$249

$443

43% off
+ Free S&Hat Amazon
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Deal Details
Amazon has Coway Airmega 300 True HEPA Air Purifier w/ 1256 sq. ft. Coverage (White, AP-1515H) on sale for $248.49. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

Note, product must be sold/shipped by Amazon

Details:
  • Room Coverage:
    • 1 air change/hr.* 2,512 ft² (233 m²)
    • 2 air changes/hr.* 1,256 ft² (117 m²)
    • 4 air changes/hr.** 628 ft² (58 m²)
  • CADR (Clean Air Delivery Rate):
    • 285 (Smoke), 306 (Dust), 339 (Pollen)
  • Filter Composition:
    • Washable Pre-Filter + Max2 Filter Set
    • Max2 Filter (Activated Carbon + HEPA)
  • Filter Life Expectancy:
    • Max2 Filter Set (1 Year)
  • Dimensions (W x H x D):
    • 13.6 x 21.2 x 13.6 in
  • Noise Level:
    • 22~52 dB(A)

Editor's Notes

Written by Discombobulated | Staff
  • At the time of this posting, our research indicates that this is $60.50 lower than the next best comparable online prices starting from $308.99.
  • 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.

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Coway Airmega 300 True HEPA Air Purifier w/ 1256 sq. ft. Coverage (White, AP-1515H) on sale for $248.49. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

Note, product must be sold/shipped by Amazon

Details:
  • Room Coverage:
    • 1 air change/hr.* 2,512 ft² (233 m²)
    • 2 air changes/hr.* 1,256 ft² (117 m²)
    • 4 air changes/hr.** 628 ft² (58 m²)
  • CADR (Clean Air Delivery Rate):
    • 285 (Smoke), 306 (Dust), 339 (Pollen)
  • Filter Composition:
    • Washable Pre-Filter + Max2 Filter Set
    • Max2 Filter (Activated Carbon + HEPA)
  • Filter Life Expectancy:
    • Max2 Filter Set (1 Year)
  • Dimensions (W x H x D):
    • 13.6 x 21.2 x 13.6 in
  • Noise Level:
    • 22~52 dB(A)

Editor's Notes

Written by Discombobulated | Staff
  • At the time of this posting, our research indicates that this is $60.50 lower than the next best comparable online prices starting from $308.99.
  • 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.

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
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Why are you downvoting this deal?

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Top Comments

VIPgenesis
63Comments
14Reputation
If it's like the 400, you can get the aftermarket(non OEM) filters for cheap on Amazon.
Go to Comment

Community Reviews

The Coway Airmega 300 comes across as a strong whole room air purifier with quiet, effective filtration and enough coverage for large spaces. It is praised for keeping allergies under control, handling dust well, and still working reliably after years of use. The prefilter also traps a surprising amount of dust, which makes upkeep feel worthwhile. The main drawback is filter cost, since original replacements are expensive and rarely discounted. A dependable pick if you want cleaner air and can live with pricier maintenance.

  • The Airmega 300 can keep allergies under control for allergy sufferers.

    televisionarchives

  • The Airmega 300 has been reported to keep working well over multiple years.

    Tyross

  • The Airmega 300 can be paired with MERV 10 carbon pads and MERV 13 filters for strong filtration performance.

    hkteaman

  • The Airmega 300 can be used as part of a multi-unit setup to cover different rooms more conveniently.

    hkteaman

  • Replacement filters can be very expensive and rarely go on sale.

    mrbugglez

  • Non-original replacement filters may develop a bad smell and should be avoided.

    televisionarchives

  • DIY box-fan filter setups may not capture the fine particulates these purifiers are advertised to handle.

    omar10wahab

  • Even with large square footage, air purification performance can depend on room and wall layout.

    Ride_The_Sky

Common Questions (4)

AI-generated summary based on comments from the community. Updated ago

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22 Comments

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Apr 10, 2026 4:09 AM
679 Comments
Joined Nov 2014
hoxuantuApr 10, 2026 4:09 AM
679 Comments
Buy one Airmega 300 or two Airmega 200? (assuming same price)
Apr 10, 2026 4:09 AM
101 Comments
Joined Aug 2013
mass422Apr 10, 2026 4:09 AM
101 Comments
I have this exact unit and it has been nothing short of terrific. I bought it at $300. Great deal.
1
Apr 10, 2026 4:55 AM
97 Comments
Joined Dec 2016
mrbugglezApr 10, 2026 4:55 AM
97 Comments
this is a great deal but the filters are so expensive to replace and they never go on sale
2
Apr 10, 2026 10:16 AM
63 Comments
Joined Oct 2017
VIPgenesisApr 10, 2026 10:16 AM
63 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from mrbugglez View quoted comment :
this is a great deal but the filters are so expensive to replace and they never go on sale
If it's like the 400, you can get the aftermarket(non OEM) filters for cheap on Amazon.
1
Apr 10, 2026 10:40 AM
260 Comments
Joined Jul 2011
avdApr 10, 2026 10:40 AM
260 Comments
Quote from mrbugglez View quoted comment :
this is a great deal but the filters are so expensive to replace and they never go on sale
Thank you! Are the copycat replacements from no-name companies any good? There seem to be quite a few on sale for around $30/2 on Amazon. Here's one random example: https://a.co/d/0cA82JGu
Apr 10, 2026 11:28 AM
2K Comments
Joined Nov 2013
beervomitApr 10, 2026 11:28 AM
2K Comments
I use a 4 pack of HVAC filters duct taped together to form a box. Carboard on the bottom. Box fan on the top. The fan is orientated to suck air in through the filters. All and all its' 20 bucks for the filters which are 1 time use but last a long time, 20 bucks for the fan, which is resuable, and about 5 bucks in duct tape every time I want to make a new one. Looks janky but works awesome.
1
1
Apr 10, 2026 1:19 PM
1K Comments
Joined May 2016
omar10wahabApr 10, 2026 1:19 PM
1K Comments
Quote from beervomit View quoted comment :
I use a 4 pack of HVAC filters duct taped together to form a box. Carboard on the bottom. Box fan on the top. The fan is orientated to suck air in through the filters. All and all its' 20 bucks for the filters which are 1 time use but last a long time, 20 bucks for the fan, which is resuable, and about 5 bucks in duct tape every time I want to make a new one. Looks janky but works awesome.
Your filter solution is not catching the particulates these devices are advertising to do. Not saying it's a bad option, because like you mentioned the price but it's limited functionality

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Apr 10, 2026 2:01 PM
2.9K Comments
Joined Aug 2016
MX400ex72Apr 10, 2026 2:01 PM
2.9K Comments
Quote from beervomit View quoted comment :
I use a 4 pack of HVAC filters duct taped together to form a box. Carboard on the bottom. Box fan on the top. The fan is orientated to suck air in through the filters. All and all its' 20 bucks for the filters which are 1 time use but last a long time, 20 bucks for the fan, which is resuable, and about 5 bucks in duct tape every time I want to make a new one. Looks janky but works awesome.
They do have there purpose, but they aren't replacement for a good air purifier.Your setup just isn't going to be able to capture the fine particles. If visible dust particles is your concern, then that is doing its job very well for very cheap.
Apr 10, 2026 3:11 PM
3.2K Comments
Joined Nov 2004
TyrossApr 10, 2026 3:11 PM
3.2K Comments
I bought the S version of this model back in 2019. I like it and it still works. I paid $300.
Apr 10, 2026 4:01 PM
177 Comments
Joined Feb 2021
PurplePassenger101Apr 10, 2026 4:01 PM
177 Comments
Quote from beervomit View quoted comment :
I use a 4 pack of HVAC filters duct taped together to form a box. Carboard on the bottom. Box fan on the top. The fan is orientated to suck air in through the filters. All and all its' 20 bucks for the filters which are 1 time use but last a long time, 20 bucks for the fan, which is resuable, and about 5 bucks in duct tape every time I want to make a new one. Looks janky but works awesome.
If you have a 3d printer you can print reusable supports for it instead of using duct tape
Apr 10, 2026 4:25 PM
35 Comments
Joined Nov 2015
nylaiApr 10, 2026 4:25 PM
35 Comments
This thing is a unit and awesome, for this price its a great deal. Might snag another for the incoming little human's room!
Pro
Apr 10, 2026 4:35 PM
3.5K Comments
Joined Mar 2007
hkteaman
Pro
Apr 10, 2026 4:35 PM
3.5K Comments
Quote from beervomit View quoted comment :
I use a 4 pack of HVAC filters duct taped together to form a box. Carboard on the bottom. Box fan on the top. The fan is orientated to suck air in through the filters. All and all its' 20 bucks for the filters which are 1 time use but last a long time, 20 bucks for the fan, which is resuable, and about 5 bucks in duct tape every time I want to make a new one. Looks janky but works awesome.
I used a box fan setup during COVID and upgraded to a quieter fan with stronger suction (it really comes down to the fan's power and the filter quality) for about $30. I paired it with 20×20×1 MERV 10 carbon pads—about $47 at the time (replaced every 6 months, now around $64)—and 20×20×4 MERV 13 filters for about $78 (replaced annually, now around $100).

It worked really well during COVID, especially since we didn't have many visitors. In 2023–2024, I switched to a few different air purifiers, including the Airmega 300 and 400, along with some other brands when they were on sale.

The box fan setup is still great for the basement, but for the living room, I prefer something more aesthetically pleasing. This is just my personal preference.
Apr 10, 2026 4:51 PM
579 Comments
Joined Jan 2017
televisionarchivesApr 10, 2026 4:51 PM
579 Comments
Quote from mass422 View quoted comment :
I have this exact unit and it has been nothing short of terrific. I bought it at $300. Great deal.
Same. I have allergy's and it works great to keep them under control
Apr 10, 2026 4:52 PM
579 Comments
Joined Jan 2017
televisionarchivesApr 10, 2026 4:52 PM
579 Comments
Quote from avd View quoted comment :
Thank you! Are the copycat replacements from no-name companies any good? There seem to be quite a few on sale for around $30/2 on Amazon. Here's one random example: https://a.co/d/0cA82JGu
Don't get those. They have a bad smell. Get the originals

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Apr 10, 2026 5:14 PM
16.2K Comments
Joined Jan 2010
Ride_The_SkyApr 10, 2026 5:14 PM
16.2K Comments
Quote from hoxuantu View quoted comment :
Buy one Airmega 300 or two Airmega 200? (assuming same price)
I got 400 for $350 but I would rather get add'l units depending on your home layout. Even if you have 1000+ sqft of space the performance depends on rooms walls etc..

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