Compare › Head to head
Blueair Blue Signature (Large) vs Coway Airmega 400
Choose the Blue Signature (Large) for
cleaning power, lower running cost, lower price, app control
The differences that matter
- Blueair Blue Signature (Large) cleans faster: 455 vs 328 cfm smoke CADR (rooms up to 711 vs 513 sq ft).
- Coway Airmega 400 is quieter on low (22 vs 23 dB).
- Blueair Blue Signature (Large) costs less to run: about $125 vs $168 a year.
- Blueair Blue Signature (Large) costs $199 less up front.
- Blueair Blue Signature (Large) has app control and scheduling.
Full specs
| Blueair Blue Signature (Large) | Coway Airmega 400 | |
|---|---|---|
| CADR — smoke | 455 cfm | 328 cfm |
| CADR — dust | 434 cfm | 328 cfm |
| CADR — pollen | 450 cfm | 400 cfm |
| Room size (4.8 air changes/hour) | 711 sq ft | 513 sq ft |
| Noise | 23–55 dB | 22–52 dB |
| Max power | 42 W | 66 W |
| Replacement filter | Blue Signature Large Filter: $100, up to 12 months | Airmega 400 Max2 Filter Set: $129, up to 12 months |
| Yearly running cost (est.) | $125 (filters $100 + power $25) | $168 (filters $129 + power $39) |
| App control | Yes | No |
| Price | $450 | $649 |