Large rooms$255
Blueair Blue Pure 311i+ Max
- CADR
- 339 cfm
- Room
- 530 ft²
- Quietest
- 23 dB
- Per year
- $89
Best value. Lowest price per cfm of smoke CADR.
Which air purifier is big enough for your room?
Most air purifiers are undersized for the rooms they're sold for. AirSheet compares 17 purifiers on the number that matters — clean air delivery rate (CADR) — plus noise and what they really cost to run each year.
Quick picks
Computed from the spec sheet and today's official store prices.
Large rooms$450
Blueair Blue Signature (Large)
- CADR
- 455 cfm
- Room
- 711 ft²
- Quietest
- 23 dB
- Per year
- $125
Most powerful. Highest smoke CADR — the fastest cleaning.
Medium rooms$144
Blueair Blue Pure 411i+ Max
- CADR
- 167 cfm
- Room
- 261 ft²
- Quietest
- 19 dB
- Per year
- $42
Cheapest to run. Lowest yearly filter + power cost per cfm.
Small rooms$140
Blueair Blue Pure 511i Max
- CADR
- 153 cfm
- Room
- 239 ft²
- Quietest
- 19 dB
- Per year
- $62
Best for bedrooms. Quiet on low, enough CADR for a 200+ sq ft room.
Medium rooms$190
Levoit Vital 200S-P
- CADR
- 250 cfm
- Room
- 391 ft²
- Quietest
- 23 dB
- Per year
- $130
Best budget pick. Best cleaning per dollar under $200.
Large rooms$300
Levoit Core 600S-P
- CADR
- 391 cfm
- Room
- 611 ft²
- Quietest
- 26 dB
- Per year
- $149
Best big-room pick. Cheapest purifier that handles 600+ sq ft.
The price tag isn't the cost
| Purifier | Price | Per year |
|---|---|---|
| Levoit EverestAir-P | $500 | $242 |
| Coway Airmega 400 | $649 | $168 |
| Levoit Core 600S-P | $300 | $149 |
| Blueair DustMagnet 5440i | $256 | $135 |
| Levoit Vital 200S-P | $190 | $130 |
Filters + electricity, running 24/7. How we estimate →
Browse
- Small rooms (up to 250 sq ft) 4 models
- Medium rooms (250–450 sq ft) 6 models
- Large rooms (450+ sq ft) 7 models
- Best air purifiers for wildfire smoke 11 models
- Cheapest air purifiers to run 17 models
- Quietest air purifiers for bedrooms 8 models
- Best budget air purifiers (under $200) 6 models