Coway Airmega 450 vs Coway Airmega 450S
A spec-only comparison using ENERGY STAR certification data. We have not tested either unit, and features like noise, filter price and build quality are not covered here.
- Cleaning speed: the Coway Airmega 450 has the higher smoke CADR (443 vs 443 cfm, 0% more).
- Running cost: the Coway Airmega 450 uses less electricity per ENERGY STAR (389 kWh/yr), about $1.83/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 664 sq ft vs 664 sq ft.
Both sit in ENERGY STAR data as Extra-large rooms (350+ cfm) units by smoke CADR. Listed differences: only the Coway Airmega 450S is listed as connected (app/Wi-Fi). Over 5 years at the U.S. average rate, the electricity difference is about $9.16 (estimate).
| Coway Airmega 450 | Coway Airmega 450S | |
|---|---|---|
| Smoke CADR (cfm) | 443 | 443 |
| Dust CADR (cfm) | 445 | 454 |
| Pollen CADR (cfm) | 450 | 450 |
| ENERGY STAR room size | 687 sq ft | 687 sq ft |
| AHAM 2/3-rule room size | 664 sq ft | 664 sq ft |
| Annual energy | 389 kWh | 399 kWh |
| Est. electricity/yr (U.S. avg) | $71.23 | $73.06 |
| Smoke CADR per watt | 6.69 | 6.55 |
| Ozone (reported) | 0 ppb | 0 ppb |
| Technology | Fan and Filter | Fan and Filter |
| Filters listed | HEPA-Type | HEPA-Type |
| Auto mode | Air Quality Sensor | Air Quality Sensor |
| Connected | No | Yes |
| Most Efficient | No | No |
| Source | ENERGY STAR record 4005917 | ENERGY STAR record 4005914 |
Purchase price and filter cost are not included (data gap). Electricity estimates use 18.31¢/kWh (EIA).
Open this pair in the compare tool
See Coway air purifiers on the manufacturer's site (plain link, not an affiliate link)
See Coway air purifiers on the manufacturer's site (plain link, not an affiliate link)