LEVOIT LAP-B851S-WNA specs
LEVOIT LAP-B851S-WNA is an ENERGY STAR certified air purifier listed for rooms up to 132 sq ft with a smoke CADR of 85 cfm and 90 kWh per year of energy use.
LEVOIT LAP-B851S-WNA lists a smoke CADR of 85 cfm (higher than 19% of the 216 certified ones) for rooms up to 132 sq ft, at 90 kWh per year and 0 ppb reported ozone.
Official specs
| CADR — smoke | 85 cfm |
|---|---|
| CADR — dust | 90 cfm |
| CADR — pollen | 109 cfm |
| Room size listed | 132 sq ft |
| Annual energy use | 90 kWh/yr |
| Efficiency (smoke CADR per watt) | 5.6 cfm/W |
| Ozone emissions | 0 ppb |
| Technology | Fan and Filter |
| Filter type | HEPA |
| Automatic mode | None |
| Connected | Yes |
| Noise level | n/c |
| ENERGY STAR certified | 2025-07-24 |
Similar air purifiers
| Model | CADR (smoke)cfm | Room sizesq ft | EnergykWh/yr | Ozoneppb |
|---|---|---|---|---|
| LEVOIT LAP-B851S-WNA this page | 85 | 132 | 90 | 0 |
| Honeywell HPA4300B | 229 | 355 | 185 | 0 |
| Winix C610 | 248 | 384 | 235 | 1 |
| Coway AP-1523D | 255 | 395 | 219 | 0 |
Skip it if
- Your room is larger than 132 sq ft: ENERGY STAR lists this model for rooms up to that size (8-foot ceiling).
How it ranks in the ENERGY STAR list
- smoke CADR: 85 — rank 175 of 216 certified air purifier models (higher is better).
- annual energy use: 90 — rank 47 of 216 certified air purifier models (lower is better).
- energy efficiency (CFM/W): 5.6 — rank 173 of 216 certified air purifier models (higher is better).
Ranks compare this model with every air purifier in the ENERGY STAR dataset (2026-11-06), not with products on sale today.
Reading these specs
- CADR
- Clean Air Delivery Rate, in cubic feet per minute, as listed for smoke, dust and pollen. Higher means more air cleaned per minute for that particle size.
- Room size
- The room size in square feet that ENERGY STAR lists for this model.
- kWh/yr
- Annual energy use as listed by ENERGY STAR.
- Ozone
- Ozone emissions in parts per billion as listed.
Noise level is not part of the ENERGY STAR dataset, so it shows as n/c. Check the maker’s own specification sheet for decibels.
Where to buy
Search Amazon.com for this exact model. Prices and availability change, so we don’t print them.
View on Amazon — search results for LEVOIT LAP-B851S-WNA on Amazon.comSee our Affiliate Disclosure.
Frequently asked questions
What room size is the LEVOIT LAP-B851S-WNA listed for?
Start with the room-size rating, then compare it with the room where the unit will sit. ENERGY STAR lists 132 sq ft for this model, with a smoke CADR of 85 cfm. Ceiling height and layout change real-world results, so treat it as a rated figure and leave the clearance the maker’s manual asks for around the intake and outlet.
How much energy does the LEVOIT LAP-B851S-WNA use?
The listing gives 90 kWh per year and an efficiency of 5.6 cfm per watt.
What filter does the LEVOIT LAP-B851S-WNA use, and does it produce ozone?
ENERGY STAR lists the filter type as HEPA. Ozone emissions are listed at 0 ppb. Compare the stated filter type rather than marketing language such as “HEPA-like”. Noise level is not part of the ENERGY STAR dataset (n/c), so see the maker’s specifications for decibels.
Sources
- ENERGY STAR certified air purifier data, record 4481120 (data.energystar.gov, dataset gaa3-swy6, updated 2026-11-06)
- ENERGY STAR product guidance for air purifiers
We compile and compare published data; we do not run our own product tests. See How We Compare.