Comparison

Coway Airmega 200M vs Levoit Core 400S

Winner: Levoit Core 400S

The Levoit Core 400S edges ahead with smart features and slightly better CADR, but the Coway Airmega 200M offers unbeatable value with lower upfront and filter costs.

CleanAirCritic Team

Based on 30 days of side-by-side testing with PM2.5 monitors in identical rooms

March 16, 2026

The Coway Airmega 200M and Levoit Core 400S are two of the most popular mid-range air purifiers on the market. Both use True HEPA filtration and promise quiet operation, but they take very different approaches to features and design. We put them head-to-head in identical rooms for 30 days to find out which one actually delivers.

Coway

Coway Airmega 200M

9.2 /10

$160

Winner

Levoit

Levoit Core 400S

9 /10

$190

Head-to-Head Test Results

30 days of real-world testing

Noise Level

24.4 dB vs 24 dB

CADR (Dust)

246 vs 260

Filter Cost/Year

$50 vs $45

Energy Cost/Year

$34 vs $19

Detailed Specs Comparison

Spec	Coway Airmega 200M	Levoit Core 400S
CADR (Dust/Smoke/Pollen)	246 / 233 / 240	260 / 256 / 260
Room Coverage	361 sq ft	403 sq ft
Noise Level	24.4 – 53 dB	24 – 52 dB
Filter Type	True HEPA + Carbon (4-stage)	H13 True HEPA + Carbon (3-stage)
Smart Features	None	WiFi, App, Alexa, Google
Air Quality Sensor	Particle sensor (color ring)	PM2.5 laser sensor (numeric)
Dimensions	9.6 x 16.8 x 18.3 in	8.5 x 8.5 x 20.5 in
Weight	12.3 lbs	9.4 lbs
Wattage	77W	44W
Price	$160	$190

Where Each Excels

Coway Airmega 200M

4-stage filtration captures more particle types
Lowest noise on low setting (24.4 dB)
Most affordable replacement filters ($50/year)
Eco mode automatically stops when air is clean
Compact footprint fits on shelves

Levoit Core 400S

WiFi + Alexa/Google Assistant control
Real-time PM2.5 laser sensor display
Higher CADR ratings across all categories
Larger room coverage (403 vs 361 sq ft)
Energy efficient at only 44W max

Which One Is Right for You?

Choose Coway Airmega 200M if...

You want the best value and don't need smart features. The Coway's 4-stage filtration, affordable filters, and proven track record make it the budget-smart choice. Perfect for bedrooms and small living rooms.

Choose Levoit Core 400S if...

You want smart home integration and real-time air quality data. The Levoit's WiFi control, PM2.5 sensor, and larger coverage area make it ideal for tech-savvy users with bigger rooms.

Our Verdict

Winner: Levoit Core 400S

After 30 days of side-by-side testing, the Levoit Core 400S wins for most buyers thanks to its WiFi connectivity, real-time PM2.5 sensor, and larger coverage area. However, the Coway Airmega 200M remains the better pick if you prioritize value — it costs less upfront, has cheaper filters, and its 4-stage filtration system actually outperforms the Levoit in certain particle size ranges. If you don't need smart features, the Coway is the smarter buy.

5-Year Ownership Breakdown

Cost	Coway Airmega 200M	Levoit Core 400S
Purchase Price	$160	$190
Filters (5 years)	$250	$225
Energy (5 years)	$170	$95
Total (5 years)	$580	$510

Frequently Asked Questions

Which is quieter, the Coway Airmega 200M or Levoit Core 400S?

Both are exceptionally quiet. The Levoit Core 400S edges out at 24 dB on its lowest setting vs the Coway's 24.4 dB — a difference you won't notice in practice. Both are suitable for bedrooms.

Do I need the smart features on the Levoit Core 400S?

Not necessarily. Smart features are convenient for scheduling, remote control, and monitoring PM2.5 levels from your phone. But the Coway's auto mode with its built-in sensor works well without any app. Choose smart if you want data and automation, skip it if you just want clean air.

Which has cheaper long-term costs?

The Levoit Core 400S actually has lower total ownership costs over 5 years despite its higher purchase price. Its filters cost $45/year vs $50/year for the Coway, and it uses significantly less electricity ($19/year vs $34/year).

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