Blueair Blue Pure 411i Max vs Levoit Core 300S
Two of the most popular bedroom purifiers.
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Best for: 19 dB on low, 46 dB on high
Check price at AmazonBest for: A compact 141 CFM Levoit at 23 W
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Blueair Blue Pure 411i Max | Levoit Core 300S | Weight |
|---|---|---|---|
| Quietest settingThe lowest listed noise level, usually sleep mode. Under about 25 dB is near-silent in a bedroom. Shark and Honeywell don't list noise, so they score at the lowest published value in the category. | 19 dB | 22 dB | 30% |
| Smoke CADRSmoke CADR when listed (Levoit lists one headline CADR). About 100 CFM suits a 150 sq ft bedroom, and 160 CFM suits 240 sq ft. | 167 CFM | 141 CFM | 25% |
| Loudest settingTop-speed noise, for when you boost it after cooking or during pollen season. Left out when the maker lists only the minimum. | 46 dB | 50 dB | 15% |
| CADR per wattComputed by us: smoke CADR divided by rated power. A bedroom unit often runs all night, every night. | 8.3 CFM/W | 6.1 CFM/W | 10% |
| Carbon or odor stage includedYes when the included filter has an activated-carbon or deodorization layer, per the maker's page. | Yes | No | 10% |
| Main filter lifeThe maker's 'up to' life for the main filter. Usage assumptions vary by brand. | 12 months | Not listed | 10% |
| CADR (smoke / dust / pollen) | 167 / 174 / 189 | Not listed | info |
| Recommended room | 259 ft² (4.8 ACH) | Not listed | info |
| Filter | Particle + carbon | 3-stage filtration | info |
| Filter life | Up to 1 year (RealTrack) | Not listed | info |
| Noise | 19 dB low, 46 dB high | 22–50 dB | info |
| Power | 20 W | Not listed | info |
| Weight | 8.38 lb | 5.95 lb | info |
| CADR | Not listed | 141 CFM / 240 m³/h | info |
| Ideal room size | Not listed | 219 ft² (4.8 ACH) / 1,051 ft² (1 ACH) | info |
| Rated power | Not listed | 23 W | info |
| AirPick score | 7.2/10 | 4.7/10 | 100% |
Where each one comes out ahead
Blueair Blue Pure 411i Max
Better published figure on: Quietest setting, Smoke CADR, Loudest setting, CADR per watt, Carbon or odor stage included.
What we like
- Quietest top speed in this group (46 dB)
- 8.4 CFM per watt
Watch out for
- 259 ft² recommended room
Levoit Core 300S
No scored spec where it is strictly ahead; its case rests on the strengths below.
What we like
- 6.1 CFM per watt
- 5.95 lb
Watch out for
- Carbon stage not named on the page
Verdict
The 411i Max is quieter at both ends (19/46 vs 22/50 dB), has more CADR (167 vs 141 CFM) and lists a carbon layer. The Core 300S is lighter at 5.95 lb.
- Blueair Blue Pure 411i Max: Blueair: Blue Pure 411i Max
- Levoit Core 300S: Levoit: Core 300S-P