Coway Airmega 400 vs Levoit Core 400S — Which Should You Buy?
Side-by-side comparison of Coway Airmega 400 and Levoit Core 400S. We compare specs, performance, and value to help you decide.
Feature Comparison
| Feature | Coway Airmega 400 | Levoit Core 400S |
|---|---|---|
| Room Coverage | Up to 1,560 sq ft | Up to 403 sq ft |
| CADR | 361 (smoke), 377 (dust), 403 (pollen) | 260 (smoke), 266 (dust), 273 (pollen) |
| Filter Type | Green True HEPA + activated carbon | True HEPA + activated carbon |
| Filter Life | 12 months | 12 months |
| Annual Filter Cost | ~$70 | ~$45 |
| Noise Level | 24–52 dB | 24–50 dB |
| Smart Features | None | App, voice control, scheduling |
| Air Quality Sensor | Yes (particle indicator) | Yes (PM2.5) |
| Weight | 18.7 lbs | 10.8 lbs |
| Energy Star | Yes | Yes |
Coway Airmega 400
Pros
- ✓Covers up to 1,560 sq ft
- ✓Dual filtration with Green True HEPA
- ✓Filter replacement indicator
- ✓Energy-efficient operation
- ✓Quiet on low and medium settings
- ✓Sleek, compact design
- ✓5-year warranty
Cons
- ✗No smart connectivity
- ✗Filter costs add up over time
- ✗Heavier than some competitors
Levoit Core 400S
Pros
- ✓Smart app control via VeSync
- ✓Real-time air quality display
- ✓Quiet sleep mode
- ✓Good value for smart features
- ✓Compact tower design
- ✓Easy filter replacement
- ✓2-year warranty
Cons
- ✗CADR lower than some competitors
- ✗Plastic build feels less premium
- ✗App can be finicky
Our Verdict
Coway Airmega 400
Our top value pick for large rooms. Outstanding CADR, reliable filtration, and solid build at a price that undercuts premium competitors.
Price Drop Alert — View Deal NowLevoit Core 400S
Best smart purifier under $200. Great for tech-savvy users who want app control and air quality monitoring without breaking the bank.
Price Drop Alert — View Deal NowOur Methodology
We test each air purifier in a sealed 250 sq ft room with a particle counter, measuring PM2.5 reduction over 1 hour. We measure noise at low/medium/high with a calibrated SPL meter, calculate annual filter costs, and evaluate smart features and build quality. No manufacturer has editorial influence.
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