Blueair Blue Signature (Large)
The highest smoke CADR here, in a furniture-style design.
Specs
| CADR — smoke | 455 cfm |
|---|---|
| CADR — dust | 434 cfm |
| CADR — pollen | 450 cfm |
| Room size (4.8 air changes/hour) | 711 sq ft |
| Noise | 23–55 dB |
| Max power | 42 W |
| Replacement filter | Blue Signature Large Filter: $100, up to 12 months |
| Yearly running cost (est.) | $125 (filters $100 + power $25) |
| App control | Yes |
| Price | $450 |
Source: Blueair. Checked 2026-09-25.
How fast does it clean?
| Room (8 ft ceiling) | Air changes/hr | Verdict |
|---|---|---|
| Small bedroom (150 sq ft) | 22.8 | Great |
| Bedroom (250 sq ft) | 13.7 | Great |
| Living room (400 sq ft) | 8.5 | Great |
| Open plan (600 sq ft) | 5.7 | Great |
What it costs to own
Over three years: $825 — the $450 purchase plus about $125 a year in filters and electricity.