Medium rooms$144
Blueair Blue Pure 411i+ Max
- CADR
- 167 cfm
- Room
- 261 ft²
- Quietest
- 19 dB
- Per year
- $42
Cheap filters that last up to a year: one of the lowest running costs here.
Best air purifiers for medium rooms (250–450 sq ft)
6 models, cheapest first.
| Category | Winner |
|---|---|
| Most cleaning power | Levoit Vital 200S-P |
| Best value ($ per cfm) | Levoit Vital 200S-P |
| Quietest | Blueair Blue Pure 411i+ Max |
| Cheapest to run | Blueair Blue Pure 411i+ Max |
Medium rooms$190
Levoit Vital 200S-P
- CADR
- 250 cfm
- Room
- 391 ft²
- Quietest
- 23 dB
- Per year
- $130
Strong output per dollar for living rooms and pets.
Medium rooms$220
Levoit Core 400S-P
- CADR
- 231 cfm
- Room
- 361 ft²
- Quietest
- 22 dB
- Per year
- $123
Round 360° design with an air-quality sensor.
Medium rooms$240
Coway Airmega Mighty AP-1512HH
- CADR
- 233 cfm
- Room
- 364 ft²
- Quietest
- 24 dB
- Per year
- $106
The long-running favorite with a proven track record; no app.
Medium rooms$256
Blueair DustMagnet 5440i
- CADR
- 216 cfm
- Room
- 338 ft²
- Quietest
- 31 dB
- Per year
- $135
Doubles as a side table; pulls in dust before it settles.
Medium rooms$399
Coway Airmega 250
- CADR
- 249 cfm
- Room
- 389 ft²
- Quietest
- 22 dB
- Per year
- $127
Mid-size Airmega with a washable pre-filter.