Coway Airmega 350
#11 in Large roomsFull review
For big rooms where you want high certified airflow and low running costs without app features.
Amazon $339$339
3.0/5
A premium Levoit for a large room where floor space is tight. The Core 600S cleans a bit more air for less money if you have the floor space.
- 354 cfmSmoke CADR
- 549 sq ftRoom size
- $99.99/yearFilters
- 24 to 56 dBNoise
- 2 yearsWarranty
Check price at Amazon$499.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Strong airflow from a slim body that sits against a wall
- Three-channel laser sensor shows PM1, PM2.5 and PM10
- Washable pre-filter
Cons
- Expensive, with $100 filters
- Moves less air per dollar than the Core 600S
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its room size. How we rank explains each one.
Specifications
| Model number | EverestAir-P (LAP-EL551S-AUS) |
|---|---|
| Performance | |
| Smoke CADR | 354 cfm |
| Dust CADR | 373 cfm |
| Pollen CADR | 431 cfm |
| PM2.5 CADR | 363 cfm |
| CADR certified by | AHAM Verifide |
| Room size (AHAM) | 549 sq ft |
| Noise | 24 to 56 dB |
| Efficiency | |
| Efficiency (IEF) | 5.3 cfm/W |
| ENERGY STAR | No |
| Energy use | 404 kWh/year |
| Power at top speed | 70 W |
| Filters | |
| Filter | HEPA |
| Activated carbon | Yes |
| Replacement | EverestAir-P replacement filter |
| Replacement cost | $99.99 every 12 months |
| Yearly filter cost | $99.99/year |
| Ionizer | No |
| CARB certified (ozone) | Yes |
| Controls and build | |
| Air-quality sensor | PM1/PM2.5/PM10 laser |
| Auto mode | Yes |
| Wi-Fi app | Yes |
| Fan speeds | 3 |
| Dimensions | 23.2 x 18.9 x 8.5 in |
| Weight | 20.7 lb |
| Warranty | 2 years |
Alternatives in this room size
Alen BreatheSmart 75i
#12 in Large roomsFull review
A premium large-room purifier with long-lasting filters, for buyers willing to pay for quiet and a subscription-backed guarantee.
Amazon $699.59$699.59
Medify MA-112
#14 in Large roomsFull review
A very high-CADR purifier for large open spaces, with high filter costs to match.
Amazon $594.99$594.99
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