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Coway Airmega Mighty AP-1512HH review

No. 5 of 10 in our air purifiers ranking · Updated · How we rank

Our verdict: The Coway Airmega Mighty AP-1512HH ranks 5th of the 10 air purifiers we compare, with 8.7 out of 10.

8.7/10

The Coway Airmega Mighty AP-1512HH is a True HEPA purifier for bedrooms and living rooms up to about 361 square feet. It suits people who want auto mode and low-speed quiet without an app.

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Why it's here

  • CADR of 233 smoke, 246 dust and 240 pollen, rated for 361 square feet at 4.8 air changes per hour
  • Auto mode with an indicator light, plus an eco mode that pauses the fan
  • Washable pre-filter, with a HEPA filter changed about once a year
  • Quiet at low speeds, from about 24 dB

Keep in mind

  • No app or Wi-Fi
  • The carbon deodorization filter needs replacing about every 6 months
  • Draws more power at top speed than the compact Levoit towers
  • The bipolar ionizer is on by default and has to be switched off in the controls

Why the Coway Airmega Mighty AP-1512HH scores 8.7

Each bar shows where it places among the 10 air purifiers in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.

  • How happy owners are4th of 10
  • How many rated it4th of 10
  • How new it is8th of 10

Why it sits behind the Levoit Vital 200S-P Smart Air Purifier

The Levoit Vital 200S-P Smart Air Purifier (8.9) beats the Coway Airmega Mighty AP-1512HH (8.7) because it leaves owners a little happier and is the newer design.

About the Coway Airmega Mighty AP-1512HH

The AP-1512HH is a four-stage purifier: a washable pre-filter, an activated carbon deodorization filter, a True HEPA filter and a bipolar ionizer. Coway lists CADR figures of 233 for smoke, 246 for dust and 240 for pollen. It is rated for 361 square feet at 4.8 air changes per hour, or 874 square feet at 2 changes per hour.

A particle sensor drives auto mode and an indicator light that shows air quality. Housefresh describes the light as blue for clean air, purple for moderate pollution and red for heavy pollution, and says it is only easy to see from above. Fan settings are Auto, 1, 2, 3 and Eco, and there is a 1, 4 or 8 hour timer. In eco mode the fan shuts off once the air has stayed clean for 30 minutes or more, then restarts when the sensor picks up pollution.

The pre-filter lifts out and washes. Coway lists the deodorization filter at about 6 months and the HEPA filter at about 1 year, with a filter-change indicator. There is no app, Wi-Fi or child lock. Coway's page doesn't list the box contents.

What owners report about the Coway Airmega Mighty AP-1512HH

We found little owner feedback on this exact model that we could open, so this section is short. Owners who comment on the ozone question report that they can smell it even with the ionizer off, though that is one reviewer's account of what users say rather than a measured result.

Independent reviewers offer more. Housefresh and TechGearLab both describe top speed as loud, and TechGearLab adds that the unit vibrates on high. Both note the lights stay on with no dimmer, and that the filters must go in in a set order with two separate replacement schedules.

Who the Coway Airmega Mighty AP-1512HH suits

The Mighty fits a bedroom, home office or mid-size living room where you want the purifier to run on its own and stay quiet at low and medium speeds. The washable pre-filter and the eco mode that stops the fan in clean air are the main conveniences.

Look elsewhere if you want app control or a child lock, or if the always-on light would bother you in a bedroom. Reviewers also point to higher power draw at top speed and a carbon filter that handles odors less well than pelleted carbon. The Levoit Core 300S-P Smart Air Purifier is the better fit for a smaller, smart bedroom unit, and the Coway Airmega 400S for a very large room.

Questions about the Coway Airmega Mighty AP-1512HH

Does the Coway AP-1512HH have an ionizer?

Yes. Coway lists a bipolar device as the fourth filtration stage, after the pre-filter, deodorization filter and HEPA filter. Its CADR figures were rated with it running.

How do I turn off the ionizer on the Coway AP-1512HH?

Press the ionizer button on the control panel. Housefresh says the unit then runs without it, and clears a test room about 3 minutes slower at top speed.

How often do I change the filters on the Coway AP-1512HH?

The deodorization (carbon) filter about every 6 months and the HEPA filter about every year, per Coway. The pre-filter is washable. After a swap you reset the filter indicators, or the red lights stay on.

Does the Coway AP-1512HH make ozone?

Only a little, if the ionizer is on. Housefresh notes the CADR certificate lists 9 ppb of ozone, and the reviewer detected no rise in a room after 3 hours. You can switch the ionizer off.

Can you turn off the light on the Coway AP-1512HH?

No. TechGearLab lists the always-on lights, with no dimmer or off option, as a drawback.

Other air purifier picks

The other badge winners in our air purifiers ranking.

All 10 air purifiers, compared

  1. 1 Levoit Core Mini-P Air PurifierBest Choice 9.2 Check Price
  2. 2 GermGuardian AC4825E HEPA Pure 22-Inch Tower Air Purifier 9.1 Check Price
  3. 3 Winix 5520 Air Purifier 8.9 Check Price
  4. 4 Levoit Vital 200S-P Smart Air Purifier 8.9 Check Price
  5. 5 Coway Airmega Mighty AP-1512HHThis review 8.7 Check Price
  6. 6 Shark NeverChange Air Purifier HP152 8.7 Check Price
  7. 7 Blueair Blue Signature Large Air Purifier 8.6 Check Price
  8. 8 IQAir HealthPro Plus XE HyperHEPA 8.5 Check Price
  9. 9 Coway Airmega 400S 8.4 Check Price
  10. 10 Levoit Core 300S-P Smart Air Purifier 8.4 Check Price
See the full air purifiers ranking

The Coway Airmega Mighty AP-1512HH on Amazon

Coway Airmega Mighty AP-1512HH

The Coway Airmega Mighty AP-1512HH is a True HEPA purifier for bedrooms and living rooms up to about 361 square feet. 8.7 out of 10.

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How we score it

Every score here comes from our ranking model; no editor sets the order. Too few review sites cover air purifiers for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 20 models for this guide before settling on these ten.

Brands can't pay to be included or to move up. We last checked these picks in October 2026.

How we rank, in full

Where these facts come from