Levoit vs Coway air purifier: Core 400S vs Airmega AP-1512HH (Mighty)
Near-identical clean-air ratings, very different designs. Here’s how Levoit’s smart tower and Coway’s long-running Mighty compare, and which suits your room.
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Levoit and Coway are two of the most shortlisted air purifier brands. Their best-known mid-size models, the Levoit Core 400S and the Coway Airmega AP-1512HH “Mighty”, are rated for almost the same room size, so the decision comes down to features, shape, running cost and whether you want an app. We also compare the smaller Levoit Core 300S with the larger Coway Airmega 250 further down.
Short answer
On clean-air delivery the two are close: Levoit rates the current Core 400S at 231 CFM and Coway rates the Mighty at 233 CFM for smoke, with rated rooms of 358 ft² and 361 ft² at 4.8 air changes per hour. Choose the Levoit Core 400S for app control, a laser PM2.5 sensor and lower rated power (38W vs 77W). Choose the Coway Mighty if you don’t want Wi-Fi, prefer a low, wide shape, and like that Coway publishes separate dust and pollen CADR figures.
Check Levoit Core 400S price (opens in a new tab)Check Coway Airmega AP-1512HH (Mighty) price (opens in a new tab)
Levoit Core 400S vs Coway Airmega AP-1512HH (Mighty): specs side by side
| Spec | Levoit Core 400S | Coway Airmega AP-1512HH (Mighty) |
|---|---|---|
| CADR | 231 CFM (current product page)† | 233 smoke / 246 dust / 240 pollen CFM |
| Rated room size (4.8 ACH) | 358 ft² | 361 ft² |
| Room size at 1 ACH | 1,718 ft² | 1,748 ft² |
| Filtration | Pre-filter, True HEPA, activated carbon (3 stages) | Pre-filter, deodorization filter, True HEPA, ionizer (4 stages; ionizer can be switched off) |
| Noise range | 22–52 dB | 24–53 dB(A) |
| Rated power | 38W | 77W |
| Air quality sensing | Laser PM2.5 sensor | Not detailed in our sources |
| Smart features | Wi-Fi app control (Levoit “S” smart model) | No Wi-Fi |
| Timer | Not detailed in our sources | 1, 4 or 8 hours |
| Filter replacement | See Levoit filter guidance | HEPA about 1 year; deodorization filter about 6 months |
| Dimensions | 10.8 × 10.8 × 20.5 in (tower) | 16.8 × 18.3 × 9.6 in |
| Weight | 11 lb | 12.3 lb |
Pros and cons
Levoit Core 400S: pros
- App control and scheduling over Wi-Fi
- Laser PM2.5 sensor for auto mode
- Lowest rated power here (38W)
- Small square footprint (10.8 × 10.8 in)
- No ionizer stage
Levoit Core 400S: cons
- Levoit’s own documents disagree on CADR (see note)
- Tall tower (20.5 in) is more visible in a room
- Needs the app for its smart features
Coway Airmega AP-1512HH (Mighty): pros
- Separate CADR ratings for smoke, dust and pollen
- Four-stage filtration including a deodorization filter
- Simple, app-free operation with a 1/4/8-hour timer
- Low, wide shape fits under windows and beside furniture
Coway Airmega AP-1512HH (Mighty): cons
- Twice the rated power of the Core 400S (77W)
- No Wi-Fi or app
- Deodorization filter is rated for about 6 months
- Ionizer stage, if you prefer to avoid one (you can turn it off)
Who should buy which
For a typical 300–400 ft² living room or large bedroom, either purifier is sized correctly on paper. The tie-breakers are practical. The Levoit is the smarter, more efficient device; the Coway is the simpler appliance with more detailed CADR disclosure. If you hate apps, get the Coway. If you want schedules, remote control and an air-quality readout, get the Levoit.
† Levoit’s current Core 400S-P product page lists 231 CFM and 358 ft² at 4.8 ACH. An older Core 400S user manual lists 260 CFM and 403 ft² at 5 ACH, and a 24–52 dB noise range. We show the current product-page figures and flag the difference.
Choose the Levoit Core 400S if…
- You want app control, schedules or voice-assistant integration
- You care about power draw on a purifier that runs 24/7
- You have a small floor footprint to work with
- You’d rather avoid an ionizer entirely
Choose the Coway Airmega AP-1512HH (Mighty) if…
- You want a purifier with no app or Wi-Fi
- You want a low unit that sits under a window
- You value separate dust and pollen CADR ratings
- You like a physical timer button for bedtime
Smaller or larger rooms: Core 300S vs Airmega 250
Step down to the Levoit Core 300S for a bedroom or office, or up to the Coway Airmega 250 for an open-plan space.
| Spec | Levoit Core 300S | Coway Airmega 250 (AP-1720H) |
|---|---|---|
| CADR | 141 CFM (240 m³/h) | 249 smoke / 261 dust / 230 pollen CFM |
| Rated room size | 219 ft² at 4.8 ACH | 465 ft² at 4 ACH; 930 ft² at 2 ACH |
| Filtration | Pre-filter, H13 True HEPA, activated carbon | Washable pre-filter plus Max2 filter (activated carbon + Green True HEPA) |
| Noise range | 22–50 dB | 22–54 dB(A) |
| Rated power | 23W‡ | 64W |
| Smart features | Wi-Fi app control | Smart Mode (Auto, Sleep, Eco) and Rapid mode; the 250S version adds Wi-Fi |
| Dimensions | 8.7 × 8.7 × 14.2 in | 18.5 × 19.7 × 8.3 in |
| Weight | 5.95 lb‡ | 20.5 lb |
‡ Levoit’s Core 300S manual lists 39W, 22–54.5 dB and 7.48 lb, which differ from the product page figures shown. Coway quotes the Airmega 250’s room size at 4 and 2 ACH rather than 4.8 ACH, so it isn’t directly comparable to Levoit’s figure.
How to read CADR and room size
CADR (Clean Air Delivery Rate) measures how many cubic feet of filtered air a purifier delivers per minute. It’s the most comparable number between brands. Room size depends on how many times per hour you want the room’s air cleaned (ACH). Allergy-focused guidance often uses around 4–5 ACH, so compare models at the same ACH. Quoting room size at 1 or 2 ACH makes a purifier look much bigger than it is.
Frequently asked questions
Is Levoit or Coway better for a bedroom?
For a typical bedroom, the smaller Levoit Core 300S (141 CFM, 219 ft² at 4.8 ACH) is usually enough. Both the Core 400S (22 dB) and the Coway Mighty (24 dB(A)) have quiet low settings if you want more headroom.
Does the Coway Mighty produce ozone?
The Mighty includes an ionizer stage that Coway says can be switched off. If you want to avoid ionizers entirely, the Levoit Core models use mechanical filtration only (pre-filter, True HEPA and carbon).
Which costs more to run?
On rated power, the Coway Mighty (77W) draws about twice as much as the Levoit Core 400S (38W) at maximum. Filter costs depend on current prices; check each brand’s replacement filter listing.
Which Levoit filters fit the Core 300S?
Levoit lists the Core 300-P-RF (original), Core 300-P-RF-PA (pet allergy) and Core 300-P-RF-TX (toxin absorber) replacement filters for the Core 300S.
Did you test these purifiers?
No. This comparison uses Levoit and Coway product pages and manuals, plus aggregated owner reviews, as explained on our methodology page. CADR figures are the manufacturers’ published ratings.
Sources
Specifications were checked against the manufacturer pages, manuals and spec sheets below in October 2026. Makers revise specs and sell regional variants, so confirm the exact model number before you buy. We do not list prices because they change daily; use the retailer link to see the current price.
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