Which is better for a bedroom?

The Coway Mighty. Its low fan speed is quiet and the colored light dims, and it has years of owner feedback behind it. The Levoit is also quiet but its app notifications can be more than you want at night.

Which handles a larger room?

They are close. The Coway is rated to 361 sq ft and the Levoit to 358 sq ft at 4.8 air changes per hour. The Levoit's higher CADR figure helps in open spaces, but neither is meant for a whole floor.

Is the Coway's ionizer a problem?

It emits about 9 ppb of ozone, well under public health limits, and you can turn the ionizer off. If you want zero ozone, the Levoit is the cleaner choice.

Both are built to run for years. The Coway's washable pre-filter protects the HEPA filter, and owners report long service life. The Levoit uses one combined filter that you replace roughly yearly.

Is the Levoit worth stepping up to?

Yes if you want app scheduling, voice control and a PM2.5 readout. If you just want clean air with a knob and a light, the Coway does the job with less to set up.

Do either work with a smart home?

The Levoit works with Alexa and Google Assistant through its app. The Coway lists Alexa support but has no app, so control is limited.

Coway Airmega AP-1512HH Mighty vs Levoit Core 400S Air Purifier

The Coway AP-1512HH Mighty is the safer pick for bedrooms and allergy sufferers who want proven filtration and simple controls. The Levoit Core 400S is the better choice for larger rooms and anyone who wants app and voice control. Both clean air well; the Coway has a longer track record and a washable pre-filter, while the Levoit adds smart features and a slightly higher CADR.

Choose the Coway Mighty if you want a dependable, no-frills purifier with a washable pre-filter, Eco mode and a strong reputation for reliability.
Choose the Levoit Core 400S if you want app control, Alexa and Google Assistant support, and a PM2.5 readout in a larger room.

Prices

Coway Airmega AP-1512HH Mighty: $57.00 at vipoutlet.com (checked today)
Levoit Core 400S Air Purifier: $164.15 at eBay (checked today)
Difference: the Coway Airmega AP-1512HH Mighty is $107.15 cheaper than the Levoit Core 400S Air Purifier today

Coway Airmega AP-1512HH Mighty Air Purifier

What separates them

	Coway Airmega AP-1512HH Mighty	Levoit Core 400S Air Purifier
Filtration stages	4-stage: washable pre-filter, carbon deodorization, True HEPA, Vital Ion	3-stage: pre-filter, HEPA, activated carbon
CADR (dust/smoke)	248 dust, 233 smoke CFM	231 CFM
Smart control	No app; Alexa only	App control plus Alexa and Google Assistant
Ionizer	Vital Ion emits about 9 ppb ozone	Ozone-free, no ionizer
Noise range	24–53 dB	22–52 dB
Filter maintenance	Washable pre-filter; HEPA and carbon replaced separately	Single combined filter replaced about once a year
Footprint and weight	16.8 x 9.6 in, 12.3 lbs	10.8 x 10.8 in, 11 lbs
Air quality display	Colored LED indicator with auto speed	PM2.5 numeric readout in app and on unit

Specs compared

Spec	Coway Airmega AP-1512HH Mighty	Levoit Core 400S Air Purifier
Coverage Area	Up to 361 square feet	358 ft2 (4.8 ACH)
Automatic Shutoff	Yes	Yes
Timer	Yes	Yes
Air Purification Type	HEPA	3-Stage Filtration
CADR Rating	248 (Dust)	231 CFM
Ozone Generation	Emits 9ppb of Ozone	No, Ozone-free
Filter Type	Pre-filter	Carbon filter
HEPA Filter	Yes	Yes
Ionic Filtration	Yes	No
Odor Absorbing	Yes	Yes
Permanent Filter	No	No
Filter Highlights	HEPA Filter	HEPA Filter

Show all 34 specs

Spec	Coway Airmega AP-1512HH Mighty	Levoit Core 400S Air Purifier
App Control	No	Yes
Assistant Support	Alexa	Google Assistant, Amazon Alexa, Yes
Remote Control	No	No
Depth	9.6 in	27.4 cm
Height	18.3 in	52 cm
Weight	12.3 lbs	5.0 kg
Width	16.8 in	27.4 cm
Noise Level	24 ~ 53 dB(A)	As low as 24dB, 22–52dB
Ozone Free	No (Emits 9ppb of Ozone)	Yes
Functionality Type

Coway Airmega AP-1512HH Mighty vs Levoit Core 400S Air Purifier

Prices

Coway Airmega AP-1512HH Mighty vs Levoit Core 400S Air Purifier

Prices