Dreo DR-HAP003S vs Coway Airmega 300
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 300 has the higher smoke CADR (315 vs 294 cfm, 7% more).
- Running cost: the Dreo DR-HAP003S uses less electricity per ENERGY STAR (282 kWh/yr), about $5.86/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 441 sq ft vs 472 sq ft.
Both sit in ENERGY STAR data as Large rooms (250–349 cfm) units by smoke CADR. Listed differences: only the Dreo DR-HAP003S is listed as connected (app/Wi-Fi). Over 5 years at the U.S. average rate, the electricity difference is about $29.30 (estimate).
| Dreo DR-HAP003S | Coway Airmega 300 | |
|---|---|---|
| Smoke CADR (cfm) | 294 | 315 |
| Dust CADR (cfm) | 306 | 333 |
| Pollen CADR (cfm) | 336 | 360 |
| ENERGY STAR room size | 456 sq ft | 488 sq ft |
| AHAM 2/3-rule room size | 441 sq ft | 472 sq ft |
| Annual energy | 282 kWh | 314 kWh |
| Est. electricity/yr (U.S. avg) | $51.63 | $57.49 |
| Smoke CADR per watt | 6.1 | 5.86 |
| Ozone (reported) | 0 ppb | 0 ppb |
| Technology | Fan and Filter | Fan and Filter |
| Filters listed | HEPA-Type | Composite Filter, Composite Filter |
| Auto mode | None | None |
| Connected | Yes | No |
| Most Efficient | No | No |
| Source | ENERGY STAR record 4577082 | ENERGY STAR record 4512747 |
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 Dreo 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)