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Coway Airmega AP-1512HH Mighty vs Coway Airmega 400(G) Air Purifier

Buy the Mighty AP-1512HH for a bedroom, office, or single room up to about 360 sq ft. Buy the Airmega 400 for an open-plan living area, a whole floor, or a home with pets and cooking odors. The Mighty is smaller, lighter, and simpler, with a washable pre-filter and a proven long-running design that owners rate highly. The 400 is a much bigger dual-sided unit with far higher airflow and smart auto control, but it is large, heavy, and needs two Max2 filters replaced.

  • Choose the Coway Mighty AP-1512HH if you need quiet, reliable HEPA cleaning for one room and want a compact unit with a washable pre-filter.
  • Choose the Coway Airmega 400 if you are cleaning a large open space and want dual-sided filtration, high airflow, and automatic smart operation.

Prices

  • Coway Airmega AP-1512HH Mighty: $57.00 at vipoutlet.com (checked today)
  • Coway Airmega 400(G) Air Purifier: $599.00 at Wellbots (checked today)
  • Difference: the Coway Airmega AP-1512HH Mighty is $542.00 cheaper than the Coway Airmega 400(G) Air Purifier today
Coway
Coway Airmega AP-1512HH Mighty Air Purifier

Coway Airmega AP-1512HH Mighty

Coway Airmega AP-1512HH Mighty Air Purifier

4.8(102 ratings)
$57.00at vipoutlet.comChecked 30 min ago
See all prices and details
Visit vipoutlet.com
Pros
  • Compact and light enough to move between rooms
  • Washable pre-filter cuts filter upkeep
  • Auto and Eco modes with a visible air quality light
  • Quiet at low speed and widely praised for reliability
Cons
  • Covers only one room
  • Ionizer emits a small amount of ozone and can be turned off
  • No app or Wi-Fi control
  • Single-sided filtration limits airflow
Coway
Coway Airmega 400(G) Smart Air Purifier

Coway Airmega 400(G) Air Purifier

Coway Airmega 400(G) Smart Air Purifier

$599.00at WellbotsChecked 29 min ago
See all prices and details
Visit Wellbots
Pros
  • Covers very large spaces with high airflow
  • Dual-sided filtration moves more air per pass
  • Smart mode adjusts automatically to real-time pollution
  • Quiet low-speed operation and a 5-year limited warranty
Cons
  • Large, heavy floor unit that needs space
  • Two Max2 filters to replace, raising long-term upkeep
  • No washable pre-filter shortcut for the main filters
  • Overkill for a single bedroom

What separates them

Coway Airmega AP-1512HH MightyCoway Airmega 400(G) Air Purifier
Room coverageUp to 361 sq ftUp to 1,560 sq ft
Airflow (CADR)About 246 dust / 240 pollen / 233 smoke410 CFM
Filtration layoutSingle-sided 4-stage: pre-filter, carbon, True HEPA, ionizerDual-sided: two pre-filters and two combined HEPA/carbon Max2 filters
IonizerVital Ion on by default; emits about 9 ppb ozoneNo separate ionizer stage listed
Smart featuresAuto mode, Eco mode, air quality LED, timer; no appReal-time monitoring, Smart mode, Eco mode, touch controls
Noise24 to 53 dB(A)About 22 dB at low speed
Size and weight16.8 x 9.6 x 18.3 in, 12.3 lbsMuch larger and heavier floor unit
Filter upkeepWashable pre-filter plus one HEPA and one carbon filterTwo Max2 filters plus two pre-filters to replace

Price history

$629.99$57.00
Oct 29Nov 11
  • Coway Airmega AP-1512HH Mighty: lowest $57.00 on Nov 11 at vipoutlet.com.
  • Coway Airmega 400(G) Air Purifier: lowest $399.00 on Nov 10 at vipoutlet.com.

Prices at every store

Coway Airmega AP-1512HH Mighty

  • vipoutlet.comNew

    Availability unknown

    $57.00Checked 30 min ago
    Visit vipoutlet.com
  • shopsup.storeNew

    Availability unknown

    $65.25Checked Nov 8
    Visit shopsup.store
  • Centred WellnessNew

    Availability unknownShips from Ireland · duties may apply

    $135.00Checked Nov 8
    Visit Centred Wellness
  • WoodArtSupplyNew

    Availability unknown

    $154.99Checked 30 min ago
    Visit WoodArtSupply
All 17 stores and price history →

Coway Airmega 400(G) Air Purifier

  • WellbotsNew

    In stock

    $599.00Free shippingChecked 29 min ago
    Visit Wellbots
  • Sylvane.comNew

    In stock

    $599.99Free shippingChecked 9 h ago
    Visit Sylvane.com
  • mercari.comNew

    In stock

    $600.00Free shippingChecked 9 h ago
    Visit mercari.com
  • eBayNew

    Availability unknownSold by zpowersports (100% positive, 7,700 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $529.99+ $148.00 shippingChecked 9 h ago
    Visit eBay

Also available at

  • eBayCheck price at eBay

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All 9 stores and price history →

Specs compared

SpecCoway Airmega AP-1512HH MightyCoway Airmega 400(G) Air Purifier
Coverage AreaUp to 361 square feet1,560 sq. ft.
Filter TypePre-filterHEPA
Noise Level24 ~ 53 dB(A)22 dB
Automatic ShutoffYes—
TimerYes—
Air Purification TypeHEPA—
CADR Rating248 (Dust)—
Ozone GenerationEmits 9ppb of Ozone—
HEPA FilterYes—
Ionic FiltrationYes—
Odor AbsorbingYes—
Permanent FilterNo—
Show all 32 specsShow fewer specs
SpecCoway Airmega AP-1512HH MightyCoway Airmega 400(G) Air Purifier
Filter HighlightsHEPA Filter—
App ControlNo—
Assistant SupportAlexa—
Remote ControlNo—
Depth9.6 in—
Height18.3 in—
Weight12.3 lbs—
Width16.8 in—
Ozone FreeNo (Emits 9ppb of Ozone)—
Functionality TypeAir Purifier

What reviewers say

Coway Airmega AP-1512HH Mighty

  • 4.8 / 5102 ratings

Owners and reviewers rate the Mighty highly for quiet operation, effective dust and allergy relief, and simple controls. Common complaints are the cost and frequency of filter replacements, fan noise on the top speed, and the ionizer, which some turn off.

What people mention
  • NoiseMixedOwners call low speed near-silent but find the top speed loud.
  • FiltrationPraisedReviewers report less dust and fewer allergy symptoms.
  • Filter costCriticisedReplacement HEPA and carbon filters are a recurring expense.
  • Auto modePraisedThe air quality sensor and auto speed are seen as reliable and hands-off.

Coway Airmega 400(G) Air Purifier

Owners and reviewers praise the Airmega 400 for moving a lot of air quietly and for its auto mode, which most find responsive. Complaints center on its size, the cost of replacement filters and occasional app connection trouble.

What people mention
  • NoisePraisedOwners say it is near-silent on low and only noticeable on the highest setting.
  • Cleaning powerPraisedReviewers report less dust and fewer allergy symptoms in large open rooms.
  • Auto modePraisedThe sensor ramps the fan up during cooking and smoke and settles back down afterward.
  • SizeCriticisedBuyers call it big and heavy, and note it needs clearance on both sides for airflow.

Questions and answers

Which is better for a bedroom?
The Mighty AP-1512HH. It is smaller, quieter at low speed, and sized for a single room. The 400 is built for large open spaces and takes up much more floor space.
Which handles a large living room or open floor plan?
The Airmega 400. Its 410 CFM airflow and dual-sided filters are rated for up to 1,560 sq ft, far beyond the Mighty's roughly 360 sq ft.
Which lasts longer?
Both are durable Coway units, and the 400 carries a 5-year limited warranty. The Mighty's washable pre-filter helps its main filters last longer between replacements.
Is the Airmega 400 worth stepping up to?
Yes if you need to clean a large space or want smart auto control. For one room, the Mighty does the same HEPA job for less upkeep and space.
Does either one produce ozone?
The Mighty has a Vital Ion stage that emits about 9 ppb of ozone and can be switched off. The Airmega 400 relies on HEPA and carbon filtration without a separate ionizer stage.
How often do filters need replacing?
Coway rates the Mighty's HEPA filter for about a year and its carbon filter for several months. The 400 uses two Max2 filters, so you replace two at a time.

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Buying guides that pick them

  • Best air purifiers
—
Speed Settings3—
ModesEco Mode, Auto mode—
Particle removal—99.999% of 0.01-micron particles
VOC and odor reduction—99%
Air changes per hour—4 air changes/hr.
Timer options—1, 4, or 8 hours
Warranty—5-year Limited Manufacturer's Warranty
Product dimensions—37.9D x 57.9W x 37.6H Centimetres
Control method—Touch
Power source—Corded Electric