Large rooms$255
Blueair Blue Pure 311i+ Max
- CADR
- 339 cfm
- Room
- 530 ft²
- Quietest
- 23 dB
- Per year
- $89
High output for a mid-priced unit.
Best air purifiers for large rooms (450+ sq ft)
7 models, cheapest first.
| Category | Winner |
|---|---|
| Most cleaning power | Blueair Blue Signature (Large) |
| Best value ($ per cfm) | Blueair Blue Pure 311i+ Max |
| Quietest | Blueair Blue Signature (Medium) |
| Cheapest to run | Blueair Blue Pure 311i+ Max |
Large rooms$300
Levoit Core 600S-P
- CADR
- 391 cfm
- Room
- 611 ft²
- Quietest
- 26 dB
- Per year
- $149
Large-room Levoit with nearly 400 cfm.
Large rooms$300
Blueair Blue Signature (Medium)
- CADR
- 321 cfm
- Room
- 502 ft²
- Quietest
- 19 dB
- Per year
- $91
Furniture-style design; filters rated up to 12 months.
Large rooms$350
Blueair Blue Pure 211i Max
- CADR
- 435 cfm
- Room
- 680 ft²
- Quietest
- 23 dB
- Per year
- $121
Among the highest CADRs here at a moderate price.
Large rooms$450
Blueair Blue Signature (Large)
- CADR
- 455 cfm
- Room
- 711 ft²
- Quietest
- 23 dB
- Per year
- $125
The highest smoke CADR here, in a furniture-style design.
Large rooms$500
Levoit EverestAir-P
- CADR
- 354 cfm
- Room
- 553 ft²
- Quietest
- 24 dB
- Per year
- $242
Slim, wall-friendly design with a laser dust sensor.
Large rooms$649
Coway Airmega 400
- CADR
- 328 cfm
- Room
- 513 ft²
- Quietest
- 22 dB
- Per year
- $168
Dual-filter design for big open spaces.