Data through April 2026
Running cost · Air Purifiers · ENERGY STAR certified
LEVOIT LAP-B851S-WNA
The LEVOIT LAP-B851S-WNA's certified consumption is 90 kWh per year, which prices out to about $17 at the national average rate — your hours of use scale that directly. That's 39% less than the median certified air purifier, placing it comfortably in the efficient third of the field (47 of 214). Where you live moves the bill from $11 a year in North Dakota to $42 in Hawaii. It also meets ENERGY STAR's stricter “Most Efficient” criteria. Note the certified pool here is small (214 models), so rankings shift more with each data refresh.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$17/yr
- Per month
- $1.41
- Per day
- 5¢
- Certified use
- 90 kWh/yr
- Rated room size
- 132 sq ft
- CADR (smoke)
- 85
- Technology
- Fan and Filter
- Efficiency
- 5.6 CFM/W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $16 | |
| Alaska | 27.4¢ | $25 | |
| Arizona | 15.5¢ | $14 | |
| Arkansas | 14.2¢ | $13 | |
| California | 35.3¢ | $32 | |
| Colorado | 16.5¢ | $15 | |
| Connecticut | 32.2¢ | $29 | |
| Delaware | 18.8¢ | $17 | |
| District of Columbia | 25.4¢ | $23 | |
| Florida | 15.4¢ | $14 | |
| Georgia | 15.4¢ | $14 | |
| Hawaiipriciest | 46.6¢ | $42 | |
| Idaho | 12.7¢ | $11 | |
| Illinois | 20.5¢ | $18 | |
| Indiana | 17.9¢ | $16 | |
| Iowa | 13.9¢ | $12 | |
| Kansas | 15.8¢ | $14 | |
| Kentucky | 15.0¢ | $14 | |
| Louisiana | 14.4¢ | $13 | |
| Maine | 28.4¢ | $26 | |
| Maryland | 22.1¢ | $20 | |
| Massachusetts | 29.4¢ | $27 | |
| Michigan | 21.4¢ | $19 | |
| Minnesota | 16.4¢ | $15 | |
| Mississippi | 16.8¢ | $15 | |
| Missouri | 14.0¢ | $13 | |
| Montana | 13.9¢ | $13 | |
| Nebraska | 13.3¢ | $12 | |
| Nevada | 14.3¢ | $13 | |
| New Hampshire | 27.2¢ | $25 | |
| New Jersey | 23.5¢ | $21 | |
| New Mexico | 15.2¢ | $14 | |
| New York | 29.4¢ | $27 | |
| North Carolina | 16.3¢ | $15 | |
| North Dakotacheapest | 12.3¢ | $11 | |
| Ohio | 19.5¢ | $18 | |
| Oklahoma | 13.3¢ | $12 | |
| Oregon | 15.8¢ | $14 | |
| Pennsylvania | 21.5¢ | $19 | |
| Rhode Island | 28.3¢ | $25 | |
| South Carolina | 17.1¢ | $15 | |
| South Dakota | 14.5¢ | $13 | |
| Tennessee | 14.9¢ | $13 | |
| Texas | 17.0¢ | $15 | |
| Utah | 13.3¢ | $12 | |
| Vermont | 24.6¢ | $22 | |
| Virginia | 17.4¢ | $16 | |
| Washington | 14.4¢ | $13 | |
| West Virginia | 16.1¢ | $14 | |
| Wisconsin | 19.2¢ | $17 | |
| Wyoming | 14.7¢ | $13 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Alen BreatheSmart 25imost efficient | 90 | $17 |
| Byzeng APH200-22Jmost efficient | 90 | $17 |
| MegaLight AP88-DTS-WTmost efficient | 90 | $17 |
| Blueair 3131000000most efficient | 89 | $17 |
| MegaLight AP-HCE99-WTmost efficient | 89 | $17 |
| CLOROX 11101most efficient | 88 | $17 |
Run your own numbers
Your rate, your numbers
- Per day
- 5¢
- Per month
- $1.41
- Per year
- $17
90 kWh/yr × 18.8¢/kWh = $17/yr
Prefilled with this model's certified 90 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.
Questions, answered with the data
- How much electricity does the LEVOIT LAP-B851S-WNA use?
- ENERGY STAR certifies the LEVOIT LAP-B851S-WNA at 90 kWh per year. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.
- How much does the LEVOIT LAP-B851S-WNA cost to run per month?
- About $1.41 a month at the U.S. average residential rate (18.8¢/kWh) — 5¢ a day, or $17 a year. Your state's rate moves this up or down; see the table above.
- Is the LEVOIT LAP-B851S-WNA energy efficient?
- It uses 39% less electricity than the median certified air purifier, placing it in the efficient third of certified models. It also meets ENERGY STAR's Most Efficient criteria.
- What does the LEVOIT LAP-B851S-WNA cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $11 a year in North Dakota (12.3¢/kWh) and $42 in Hawaii (46.6¢/kWh).