Blueair Pure 411 vs Levoit LAP-B851S-WNA
A spec-only comparison using ENERGY STAR certification data. We have not tested either unit, and features like noise, filter price and build quality are not covered here.
- Cleaning speed: the Blueair Pure 411 has the higher smoke CADR (98 vs 85 cfm, 15% more).
- Running cost: the Blueair Pure 411 uses less electricity per ENERGY STAR (64 kWh/yr), about $4.76/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 147 sq ft vs 128 sq ft.
Both sit in ENERGY STAR data as Small rooms (under 150 cfm) units by smoke CADR. Listed differences: only the Levoit LAP-B851S-WNA is listed as connected (app/Wi-Fi); only the Blueair Pure 411 lists an air-quality-sensor auto mode; reported ozone is 1 ppb vs 0 ppb. Over 5 years at the U.S. average rate, the electricity difference is about $23.80 (estimate).
| Blueair Pure 411 | Levoit LAP-B851S-WNA | |
|---|---|---|
| Smoke CADR (cfm) | 98 | 85 |
| Dust CADR (cfm) | 107 | 90 |
| Pollen CADR (cfm) | 127 | 109 |
| ENERGY STAR room size | 152 sq ft | 132 sq ft |
| AHAM 2/3-rule room size | 147 sq ft | 128 sq ft |
| Annual energy | 64 kWh | 90 kWh |
| Est. electricity/yr (U.S. avg) | $11.72 | $16.48 |
| Smoke CADR per watt | 12.25 | 5.86 |
| Ozone (reported) | 1 ppb | 0 ppb |
| Technology | Fan and Filter | Fan and Filter |
| Filters listed | HEPA-Type | HEPA |
| Auto mode | Air Quality Sensor | None |
| Connected | No | Yes |
| Most Efficient | Yes | Yes |
| Source | ENERGY STAR record 4046729 | ENERGY STAR record 4481120 |
Purchase price and filter cost are not included (data gap). Electricity estimates use 18.31¢/kWh (EIA).
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See Blueair air purifiers on the manufacturer's site (plain link, not an affiliate link)
See Levoit air purifiers on the manufacturer's site (plain link, not an affiliate link)