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Head to head

Coway Airmega 400 vs Levoit Core 400S

Coway Airmega 400 leads 4 to 1 on the 5 rankable specs, but Levoit Core 400S costs $330 less.

Catalog as of September 1, 2026

Why, in numbers

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Coway Airmega 400
$5494 spec wins
Swap

Compare a different air purifier

Levoit Core 300S Smart True HEPA Air Purifier$149Winix 5500-2 Air Purifier$159Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749Dyson Purifier Hot+Cool Formaldehyde HP09$799
Levoit Core 400S
$2191 spec win
Swap

Compare a different air purifier

Levoit Core 300S Smart True HEPA Air Purifier$149Winix 5500-2 Air Purifier$159Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749Dyson Purifier Hot+Cool Formaldehyde HP09$799

Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 4 to 1

Buy the Coway Airmega 400.

  • Leads 4 of 5 rankable overall specs; Levoit Core 400S takes 1.
  • CADR: 350 CFM vs 260 CFM / 442 m³/h
  • Coverage area: 1,560 sq ft vs 403 sq ft
  • Levoit Core 400S is $330 cheaper. Pay the difference only if cadr matters to you.

Check first: the Coway Airmega 400 has no Wi-Fi app. Tick them under deal-breakers if that rules it out.

4 Coway Airmega 4005 rankable of 11 specsLevoit Core 400S 1

Deal-breakers

tick what would make you walk away

  • row

    No schedules or remote control from your phone.

    Trips:Coway Airmega 400 · Smart Auto Mode + Eco ModeClear:Levoit Core 400S · VeSync Wi-Fi App, Amazon Alexa, Google…
  • row

    Undersized for an open-plan living area.

    Clear:Coway Airmega 400 · 1,560 sq ftTrips:Levoit Core 400S · 403 sq ft

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Coway

350 CFM (Smoke), 328 CFM (Dust), 400 CFM (Pollen)

Levoit

260 CFM / 442 m³/h (Smoke), 260 CFM (Dust), 260 CFM (Pollen)

Coverage area

Coway

1,560 sq ft (2 air changes/hr) / 780 sq ft (4 air changes/hr)

Levoit

403 sq ft (5 air changes/hr) / 990 sq ft (2 air changes/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Coway Airmega 400

Upfront list price$549
3-Yr Dual Max2 Filter Set (Every 12 months (~$90/yr set))+$270
3-Year Estimated Total$819

Levoit Core 400S

Upfront list price$219
3-Yr H13 True HEPA filter (Every 12 months (~$45/yr))+$135
3-Year Estimated Total$354

Room Placement & Bedroom Noise Check

Physical clearance required for airflow, wall placement, and bedroom noise levels.

Ergonomic & Spatial Check

Wall Clearance Required

Cylindrical 360° filters cannot sit flush against walls without choking intake.

Coway

Requires 12 in perimeter airflow space

Levoit

360° intake requires 15 in perimeter clearance from walls

Nighttime Sleep Mode Noise

Levels below 25 dB are virtually silent for light sleepers.

Coway

Standard sleep speed

Levoit

24 dB quiet sleep mode

Unit Footprint & Dimensions

Coway

Standard room purifier footprint

Levoit

Mid-sized cylinder (10.8 × 10.8 × 20.5 in; 11.0 lb)

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Coway: What to watch for

  • Maintenance

    Requires periodic filter replacements to maintain airflow and odor capture.

    Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Levoit: What to watch for

  • Maintenance

    Requires periodic filter replacements to maintain airflow and odor capture.

    Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Coway Airmega 400$5494 wins
Levoit Core 400S$2191 win

Performance

leads 2-0
Performance specifications. Middle column is Coway Airmega 400, right column is Levoit Core 400S.
CADR350 CFM (Smoke), 328 CFM (Dust), 400 CFM (Pollen) (wins this row: higher)260 CFM / 442 m³/h (Smoke), 260 CFM (Dust), 260 CFM (Pollen)
Room sizeLarge living rooms, open floor plans, officesBedrooms, apartments, mid-size living spaces
Coverage area1,560 sq ft (2 air changes/hr) / 780 sq ft (4 air changes/hr) (wins this row: higher)403 sq ft (5 air changes/hr) / 990 sq ft (2 air changes/hr)

Filters

2 differences
Filters specifications. Middle column is Coway Airmega 400, right column is Levoit Core 400S.
Filter typesWashable Pre-filter + Max2 Filter (True HEPA + Activated Carbon)3-Stage: Nylon Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon
Filter life12 months (Max2 filter) / Washable pre-filters6–12 months

Usability & Smart

leads 1-0
Usability & Smart specifications. Middle column is Coway Airmega 400, right column is Levoit Core 400S.
Noise levels22 dB (Sleep mode) – 52 dB (Max speed) (wins this row: lower)24 dB (Sleep mode) – 52 dB (High mode)
Energy consumption66 W max power consumption (Energy Star Certified)38 W max power consumption
Smart featuresSmart Auto Mode + Eco Mode (no Wi-Fi app)VeSync Wi-Fi App, Amazon Alexa, Google Assistant voice control
Air quality sensorsReal-time particle sensor with colorful LED ring indicatorAirSight Plus Laser Dust Sensor with PM2.5 numerical display and 4-color ring

Design & Ownership

2 differences
Design & Ownership specifications. Middle column is Coway Airmega 400, right column is Levoit Core 400S.
Weight24.7 lb (11.2 kg)14.1 lb (6.4 kg) (wins this row: lower)
Warranty5 years limited motor / 1 year electronic parts (wins this row: higher)2 years limited warranty
Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.
Coway Airmega 400 source (opens in a new tab)Levoit Core 400S source (opens in a new tab)

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
Full Coway Airmega 400 specs →

Pick this one if

Levoit Core 400S

Smart air purifier with H13 True HEPA filtration, AirSight Plus laser dust sensor, and VeSync app control.

  • Whisper-quiet 24 dB sleep mode with completely dimmable light display
  • AirSight Plus laser sensor provides real-time PM2.5 numerical readings
  • VeSync smartphone app with scheduling, filter life tracking, and voice control

What you give up

  • Coverage is sized for medium bedrooms and living rooms (under 1,000 sq ft)
  • Activated carbon layer is a coated sheet rather than heavy pellet bed
Full Levoit Core 400S specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

Tied on bedrooms. Levoit Core 400S is cheaper.

  • The 2 rankable bedrooms specs split 1 to 1.
  • Saves $330 at list price.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

For big rooms & allergies, buy the Coway Airmega 400.

  • Leads 2 of 2 rankable big rooms & allergies specs.
  • CADR: 350 CFM vs 260 CFM / 442 m³/h
  • Coverage area: 1,560 sq ft vs 403 sq ft
  • Levoit Core 400S is $330 cheaper. Pay the difference only if cadr matters to you.

Low running cost

Cheap to own: filter life, power draw, warranty

Too close to call on low running cost from the spec sheets. Only warranty is rankable here.

  • Filter life: 12 months vs 6–12 months
  • Energy consumption: 66 W max power consumption vs 38 W max power consumption

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Coway Airmega 400 spec sheetLevoit Core 400S spec sheet

Manufacturer pages: Coway Airmega 400 ↗ · Levoit Core 400S ↗

Common questions

Which is cheaper, the Coway Airmega 400 or the Levoit Core 400S?

Levoit Core 400S costs $330 less at list price.

What is the biggest catch with the Coway Airmega 400 or Levoit Core 400S?

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 400S?

Tied on bedrooms. Levoit Core 400S is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $330 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.

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