Head-to-head

Levoit Core 600S vs Coway Airmega AP-1512HH vs Blueair Blue Pure 311 Auto

Levoit Core 600S

8.4 $299.99

Coway Airmega AP-1512HH

8.3 $168.99

Blueair Blue Pure 311 Auto

8.1 $229

Verdict

Levoit Core 600S

When a bedroom unit can't keep up. The 600S has the airflow to clean a 600-plus sq ft open room about every 12 minutes, with smart sensing, app control, and a quiet 26 dB sleep mode. It roars at 59 dB on turbo, but for big rooms it's the value muscle.

Coway Airmega AP-1

The bedroom default, and still an easy recommendation. AHAM-verified CADR strong enough to clean a typical bedroom at a quiet low speed, True HEPA, a washable pre-filter, and a 3-year warranty for under $200. The carbon is thin, so it's not your smoke or odor machine.

Blueair Blue Pure

Quiet, efficient, and easy. The 311 Auto clears a medium room in about 12 minutes, drops to a near-silent 23 dB, and adjusts itself on auto. The carbon's thin so heavy smoke isn't its job and there's no app, but for allergies and dander it's a clean pick.

Best for

Levoit Core 600S

Large rooms, open layouts, smoke events, and households that want stronger airflow plus smart controls.

Coway Airmega AP-1

Most bedrooms and medium-size rooms where you want verified CADR, quiet everyday use, and strong value for allergies or dust.

Blueair Blue Pure

Allergy and pet-dander households that want a simple mid-size-room purifier with auto mode and low-maintenance daily use.

Avoid if

Levoit Core 600S

small bedrooms or desks where a quieter, cheaper, smaller purifier is enough.

Coway Airmega AP-1

large open layouts, heavy smoke events, or if you specifically want app control and a built-in air-quality display.

Blueair Blue Pure

wildfire smoke, large open rooms, or deeper odor control are the main reasons you are buying.

Score breakdown

noise

Levoit Cor

7.8

Coway Airm

8.8

Blueair Bl

9.0

filter cost

Levoit Cor

8.0

Coway Airm

8.0

Blueair Bl

7.0

odor carbon

Levoit Cor

6.0

Coway Airm

6.5

Blueair Bl

6.0

room size cadr

Levoit Cor

9.8

Coway Airm

8.5

Blueair Bl

8.7

particle filtration

Levoit Cor

9.0

Coway Airm

9.2

Blueair Bl

8.8

Specs

cadr

~410 CFM smoke (AHAM-verified)

246 dust / 240 pollen / 233 smoke (AHAM-verified)

250 smoke / 250 pollen / 244 dust (AHAM-verified)

type

Large-room / open-layout smart HEPA purifier

Bedroom / medium-room True HEPA purifier

Mid-size-room HEPASilent purifier

noise

~26 dB (sleep) to ~59 dB (turbo)

24.4-53.8 dB(A) across speeds

23-53 dB across speeds

power

~49W max

~77W; Energy Star

7-35W; Energy Star, AHAM & CARB certified

weight

~13 lb

~12.3 lb

~7 lb

coverage

~635 sq ft at ~4.8 ACH (Levoit markets up to ~3,175 sq ft at 1 ACH)

361 sq ft at 4.8 ACH (up to ~874 sq ft at 2 ACH)

~388 sq ft at ~4.8 ACH (full clean ~every 12.5 min)

dimensions

~12.3 x 12.3 x 23.6 in

16.8 x 18.3 x 9.6 in (W x H x D)

~13 x 13 x 20.5 in (W x D x H)

filtration

3-in-1: pre-filter, True HEPA (HEPA-grade in Sleep Mode), activated carbon (99.97% at 0.1-0.3 micron)

4-stage: washable pre-filter, activated-carbon deodorizer, True HEPA, optional Vital Ion

3-stage: washable fabric pre-filter, HEPASilent particle filter (99.97% to 0.1 micron), activated carbon

fan control

Multiple speeds + Auto + Sleep mode

3 manual speeds + Auto + Eco mode

One-button Auto mode + manual speeds; particle sensor

filter life

Core 600S-RF replacement ~12 months; pre-filter washable

True HEPA ~12 months; carbon ~6-12 months; pre-filter washable

Combined particle + carbon filter ~6 months; pre-filter washable

smart features

Wi-Fi + VeSync app, Alexa/Google, AirSight Plus PM2.5 sensor, Auto/Sleep, light sensor, timer

AQI sensor + color LED, filter indicator, timer; no Wi-Fi or app on the base model

Auto + 3-color AQI LED; no Wi-Fi/app (311i adds it)

ozone

—

CARB certified. Optional Vital Ion mode emits trace ozone; it ships off and is best left off

—

warranty

—

3-year

1-year limited

Buy →Buy →Buy →

	Levoit Core 600S	Coway Airmega AP-1512HH	Blueair Blue Pure 311 Auto
Score	8.4	8.3	8.1
Price	$299.99	$168.99	$229
Verdict	When a bedroom unit can't keep up. The 600S has the airflow to clean a 600-plus sq ft open room about every 12 minutes, with smart sensing, app control, and a quiet 26 dB sleep mode. It roars at 59 dB on turbo, but for big rooms it's the value muscle.	The bedroom default, and still an easy recommendation. AHAM-verified CADR strong enough to clean a typical bedroom at a quiet low speed, True HEPA, a washable pre-filter, and a 3-year warranty for under $200. The carbon is thin, so it's not your smoke or odor machine.	Quiet, efficient, and easy. The 311 Auto clears a medium room in about 12 minutes, drops to a near-silent 23 dB, and adjusts itself on auto. The carbon's thin so heavy smoke isn't its job and there's no app, but for allergies and dander it's a clean pick.
Best for	Large rooms, open layouts, smoke events, and households that want stronger airflow plus smart controls.	Most bedrooms and medium-size rooms where you want verified CADR, quiet everyday use, and strong value for allergies or dust.	Allergy and pet-dander households that want a simple mid-size-room purifier with auto mode and low-maintenance daily use.
Avoid if	small bedrooms or desks where a quieter, cheaper, smaller purifier is enough.	large open layouts, heavy smoke events, or if you specifically want app control and a built-in air-quality display.	wildfire smoke, large open rooms, or deeper odor control are the main reasons you are buying.
Score breakdown
noise	7.8	8.8	9.0
filter cost	8.0	8.0	7.0
odor carbon	6.0	6.5	6.0
room size cadr	9.8	8.5	8.7
particle filtration	9.0	9.2	8.8
Specs
cadr	~410 CFM smoke (AHAM-verified)	246 dust / 240 pollen / 233 smoke (AHAM-verified)	250 smoke / 250 pollen / 244 dust (AHAM-verified)
type	Large-room / open-layout smart HEPA purifier	Bedroom / medium-room True HEPA purifier	Mid-size-room HEPASilent purifier
noise	~26 dB (sleep) to ~59 dB (turbo)	24.4-53.8 dB(A) across speeds	23-53 dB across speeds
power	~49W max	~77W; Energy Star	7-35W; Energy Star, AHAM & CARB certified
weight	~13 lb	~12.3 lb	~7 lb
coverage	~635 sq ft at ~4.8 ACH (Levoit markets up to ~3,175 sq ft at 1 ACH)	361 sq ft at 4.8 ACH (up to ~874 sq ft at 2 ACH)	~388 sq ft at ~4.8 ACH (full clean ~every 12.5 min)
dimensions	~12.3 x 12.3 x 23.6 in	16.8 x 18.3 x 9.6 in (W x H x D)	~13 x 13 x 20.5 in (W x D x H)
filtration	3-in-1: pre-filter, True HEPA (HEPA-grade in Sleep Mode), activated carbon (99.97% at 0.1-0.3 micron)	4-stage: washable pre-filter, activated-carbon deodorizer, True HEPA, optional Vital Ion	3-stage: washable fabric pre-filter, HEPASilent particle filter (99.97% to 0.1 micron), activated carbon
fan control	Multiple speeds + Auto + Sleep mode	3 manual speeds + Auto + Eco mode	One-button Auto mode + manual speeds; particle sensor
filter life	Core 600S-RF replacement ~12 months; pre-filter washable	True HEPA ~12 months; carbon ~6-12 months; pre-filter washable	Combined particle + carbon filter ~6 months; pre-filter washable
smart features	Wi-Fi + VeSync app, Alexa/Google, AirSight Plus PM2.5 sensor, Auto/Sleep, light sensor, timer	AQI sensor + color LED, filter indicator, timer; no Wi-Fi or app on the base model	Auto + 3-color AQI LED; no Wi-Fi/app (311i adds it)
ozone	—	CARB certified. Optional Vital Ion mode emits trace ozone; it ships off and is best left off	—
warranty	—	3-year	1-year limited
	Buy →	Buy →	Buy →

PickGrade may earn a commission from purchases made through links on this page, at no extra cost to you. This never affects our grades. Full disclosure.