ProductViper · Head-to-head · Air Purifiers
Levoit Core 400S vs Coway Mighty2
Both clean about the same air, with CADR in the 231 to 259 CFM range, so the choice is app control and a lower price versus build quality and a longer warranty. The Levoit Core 400S wins on ViperScore, 85 to 82, and costs $189.97 against $269.99.
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Levoit Core 400S
Which one should you buy?
Buy the Levoit Core 400S if you want auto mode you can check and control from the VeSync app, Alexa or Google, and you would rather keep the $80 difference. Buy the Levoit Core 400S if a living room or large bedroom is the target and smart control matters.
Buy the Coway Airmega Mighty2 if you do not want an app or Wi-Fi at all and value a 3-year warranty, a 12-month filter and a PM1/PM2.5/PM10 sensor. Buy the Coway Airmega Mighty2 if build quality matters more to you than price.
Side-by-side specs
| Levoit Core 400S | Coway Mighty2 | |
|---|---|---|
| Price (Amazon, Sept 28 2026) | $189.97 | $269.99 |
| Amazon rating | 4.7 stars (24,925 ratings) | 4.6 stars (29,131 ratings) |
| ViperScore | 85 · Strong Buy | 82 · Good Buy |
| CADR (smoke / dust / pollen) | 231 / 240 / 259 CFM, AHAM Verifide | 240 / 242 / 249 CFM |
| Room coverage (1 air change/hr) | Up to 1,733 sq ft | Up to 1,800 sq ft (390 sq ft at 5 ACH) |
| Filter | 3-stage: pre-filter, H13 True HEPA, activated carbon | Slide-out washable pre-filter + bonded carbon/HEPA |
| Replacement filter | About $50, every 6–8 months | $69.99, 12-month life |
| Air-quality sensor | PM2.5 laser sensor, color ring | MegaScan laser, PM1/PM2.5/PM10, plus light sensor |
| Modes | Auto, sleep, manual speeds | Auto 1–3, Sleep, Eco, Turbo; 12-hour timer |
| Noise | 24 dB sleep mode | 19–50 dB official (35.9–56.9 dBA measured) |
| App / smart home | VeSync app, Alexa, Google; no subscription | None; no Wi-Fi, controls on unit |
| Size and weight | 10.8 x 10.8 x 20.5 in; 14.1 lb | 16.9 x 17.9 x 9.3 in; 15.2 lb |
| Warranty | 2-year Levoit limited | 3-year Coway |
Where each one wins
Why the Levoit Core 400S wins
- Higher Value (88 vs 74): similar CADR for $80 less, and replacement filters run about $50 against $69.99.
- More Features (84 vs 62): VeSync app, Alexa and Google control with no subscription, plus a PM2.5 sensor-driven auto mode.
- Higher Reliability (96 vs 94) and Satisfaction (94 vs 92) across 24,925 Amazon ratings at 4.7 stars.
Why the Coway Mighty2 is worth considering
- Higher Quality (90 vs 76): a sturdy 15.2 lb body, slide-out washable pre-filter and no ionizer.
- Better Warranty (78 vs 66): 3 years from Coway against 2 years from Levoit.
- Longer filter life and a broader sensor: 12 months per filter and PM1, PM2.5 and PM10 readings.
ViperScore breakdown
| Levoit Core 400S | Coway Mighty2 | |
|---|---|---|
| Value (25%) | 88 | 74 |
| Quality (20%) | 76 | 90 |
| Features (15%) | 84 | 62 |
| Reliability (15%) | 96 | 94 |
| Satisfaction (15%) | 94 | 92 |
| Warranty (10%) | 66 | 78 |
| ViperScore | 85 | 82 |
Higher number highlighted. Weights: Value 25%, Quality 20%, Features 15%, Reliability 15%, Satisfaction 15%, Warranty 10%. How we score →
Questions buyers ask
Which cleans a bigger room, the Levoit Core 400S or the Coway Mighty2?
They are close. Levoit rates the Core 400S for up to 1,733 sq ft at one air change per hour and Coway rates the Mighty2 for up to 1,800 sq ft, or about 390 sq ft at the 5 air changes per hour that matter for allergies.
Which costs less to run each year?
The Levoit's filter is about $50 and typically lasts 6 to 8 months, while the Coway's is $69.99 and lasts 12 months, so yearly filter costs end up similar. The Levoit still costs $80 less up front.
Does either one need Wi-Fi or a subscription?
The Levoit Core 400S works with the free VeSync app, Alexa and Google, with no subscription. The Coway Mighty2 has no app or Wi-Fi at all; everything is on the unit.
Prices are live Amazon prices from Sept 28 2026 and change often; Amazon shows the current price. ProductViper is a participant in the Amazon Services LLC Associates Program.
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