Head to head
Coway Airmega 400 vs Levoit Core 600S Smart True HEPA
Levoit Core 600S Smart True HEPA leads 3 to 2 on the 5 rankable specs and costs $250 less, which makes it the straightforward pick.
Catalog as of September 1, 2026
Why, in numbers
Swap
Compare a different air purifier
Levoit Core 300S Smart True HEPA Air Purifier$149Winix 5500-2 Air Purifier$159Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749Dyson Purifier Hot+Cool Formaldehyde HP09$799Swap
Compare a different air purifier
Levoit Core 300S Smart True HEPA Air Purifier$149Winix 5500-2 Air Purifier$159Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749Dyson Purifier Hot+Cool Formaldehyde HP09$799Buying for
Straight answer
Overall: 2 to 3
Buy the Levoit Core 600S Smart True HEPA.
- Leads 3 of 5 rankable overall specs; Coway Airmega 400 takes 2.
- CADR: 410 CFM vs 350 CFM
- Coverage area: 1,588 sq ft vs 1,560 sq ft
- It is also $250 cheaper.
Deal-breakers
tick what would make you walk away
- Trips:Coway Airmega 400 · Smart Auto Mode + Eco ModeClear:Levoit Core 600S Smart True HEPA · VeSync App, Alexa & Google Assistant vo…
At a glance
The handful of numbers that decide most purchases in this category.
CADR
Coway
350 CFM (Smoke), 328 CFM (Dust), 400 CFM (Pollen)
Levoit
410 CFM (Smoke), 400 CFM (Dust), 420 CFM (Pollen)
Coverage area
Coway
1,560 sq ft (2 air changes/hr) / 780 sq ft (4 air changes/hr)
Levoit
1,588 sq ft (2 air changes/hr) / 635 sq ft (5 air changes/hr)
True 3-Year Cost of Ownership (TCO)
Coway Airmega 400
Levoit Core 600S Smart True HEPA
The 90-Day Owner Regret Check
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Coway: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Levoit: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Performance
leads 2-0| CADR | 350 CFM (Smoke), 328 CFM (Dust), 400 CFM (Pollen) | 410 CFM (Smoke), 400 CFM (Dust), 420 CFM (Pollen) (wins this row: higher) |
|---|---|---|
| Room size | Large living rooms, open floor plans, offices | Extra-large spaces, open-concept homes, basements |
| Coverage area | 1,560 sq ft (2 air changes/hr) / 780 sq ft (4 air changes/hr) | 1,588 sq ft (2 air changes/hr) / 635 sq ft (5 air changes/hr) (wins this row: higher) |
Filters
2 differences| Filter types | Washable Pre-filter + Max2 Filter (True HEPA + Activated Carbon) | 3-Stage True HEPA (Pre-filter + H13 True HEPA + High-efficiency Custom Carbon) |
|---|---|---|
| Filter life | 12 months (Max2 filter) / Washable pre-filters | 6–12 months depending on air quality |
Usability & Smart
leads 1-0| Noise levels | 22 dB (Sleep mode) – 52 dB (Max speed) (wins this row: lower) | 26 dB (QuietKeap Sleep mode) – 55 dB (High) |
|---|---|---|
| Energy consumption | 66 W max power consumption (Energy Star Certified) | 49 W max (Energy Star verified) |
| Smart features | Smart Auto Mode + Eco Mode (no Wi-Fi app) | VeSync App, Alexa & Google Assistant voice integration, custom schedules |
| Air quality sensors | Real-time particle sensor with colorful LED ring indicator | AirSight Plus laser dust sensor (PM2.5 real-time numerical display) |
Design & Ownership
2 differences| Weight | 24.7 lb (11.2 kg) | 13.7 lb (6.2 kg) (wins this row: lower) |
|---|---|---|
| Warranty | 5 years limited motor / 1 year electronic parts (wins this row: higher) | 2 years |
Which one should you buy
Pick this one if
Coway Airmega 400
Dual-suction large room air purifier with Max2 HEPA and activated carbon filtration covering 1,560 sq ft.
- Massive CADR cleans up to 1,560 sq ft twice per hour
- Dual-sided air intake with combined True HEPA and carbon filters
- Smart Eco mode turns off fan when air remains clean for 30 minutes
What you give up
- Cube design has a large floor footprint
- No mobile app connectivity on the non-S model
Pick this one if
Levoit Core 600S Smart True HEPA
High-efficiency smart vortex air purifier with VortexAir 3.0 technology cleaning up to 1,588 sq ft in 30 mins.
- Exceptional CADR performance at an unbeatable sub-$300 price
- Ultra-quiet 26 dB Sleep mode with display light shutoff
- Feature-rich VeSync mobile app with voice assistant control
What you give up
- Activated carbon filter layer is thinner for heavy smoke odors
- Large cylindrical form factor requires space
Best for each use
Bedrooms
Tied on bedrooms. Levoit Core 600S Smart True HEPA is cheaper.
Big rooms & allergies
For big rooms & allergies, buy the Levoit Core 600S Smart True HEPA.
Low running cost
Too close to call on low running cost from the spec sheets. Only warranty is rankable here.
Done deciding?
Open the full standalone spec sheet for either device.
Manufacturer pages: Coway Airmega 400 ↗ · Levoit Core 600S Smart True HEPA ↗
Common questions
Which is cheaper, the Coway Airmega 400 or the Levoit Core 600S Smart True HEPA?
Levoit Core 600S Smart True HEPA costs $250 less at list price.
What is the biggest catch with the Coway Airmega 400 or Levoit Core 600S Smart True HEPA?
Coway Airmega 400 has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.
Which is better for bedrooms, the Coway Airmega 400 or the Levoit Core 600S Smart True HEPA?
Tied on bedrooms. Levoit Core 600S Smart True HEPA is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $250 at list price.
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.