Data through June 2026
Running cost · Air Purifiers · ENERGY STAR certified
Winix AT40
The Winix AT40's certified consumption is 272 kWh per year, which prices out to about $50 at the national average rate — your hours of use scale that directly. It sits near the bottom of the certified table — using 84% more than the median air purifier (rank 173 of 225) — so the state you live in matters more than usual. The same unit costs $36 a year in Nevada but $143 in Hawaii — electricity rates, not the appliance, make the difference. Note the certified pool here is small (225 models), so rankings shift more with each data refresh.
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$50/yr
- Per month
- $4.16
- Per day
- 14¢
- Certified use
- 272 kWh/yr
- Rated room size
- 411 sq ft
- CADR (smoke)
- 265
- Technology
- Fan and Filter
- Efficiency
- 5.6 CFM/W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $45 | |
| Alaska | 28.2¢ | $77 | |
| Arizona | 15.2¢ | $41 | |
| Arkansas | 14.1¢ | $38 | |
| California | 34.7¢ | $94 | |
| Colorado | 17.1¢ | $47 | |
| Connecticut | 24.3¢ | $66 | |
| Delaware | 19.3¢ | $52 | |
| District of Columbia | 24.4¢ | $66 | |
| Florida | 15.1¢ | $41 | |
| Georgia | 16.4¢ | $45 | |
| Hawaiipriciest | 52.7¢ | $143 | |
| Idaho | 14.4¢ | $39 | |
| Illinois | 19.9¢ | $54 | |
| Indiana | 17.5¢ | $48 | |
| Iowa | 15.9¢ | $43 | |
| Kansas | 15.7¢ | $43 | |
| Kentucky | 14.3¢ | $39 | |
| Louisiana | 13.5¢ | $37 | |
| Maine | 29.6¢ | $80 | |
| Maryland | 21.8¢ | $59 | |
| Massachusetts | 29.6¢ | $81 | |
| Michigan | 23.0¢ | $63 | |
| Minnesota | 17.5¢ | $48 | |
| Mississippi | 14.9¢ | $40 | |
| Missouri | 16.2¢ | $44 | |
| Montana | 15.1¢ | $41 | |
| Nebraska | 13.3¢ | $36 | |
| Nevadacheapest | 13.1¢ | $36 | |
| New Hampshire | 27.0¢ | $73 | |
| New Jersey | 24.9¢ | $68 | |
| New Mexico | 15.1¢ | $41 | |
| New York | 29.5¢ | $80 | |
| North Carolina | 14.7¢ | $40 | |
| North Dakota | 14.1¢ | $38 | |
| Ohio | 19.2¢ | $52 | |
| Oklahoma | 14.3¢ | $39 | |
| Oregon | 16.3¢ | $44 | |
| Pennsylvania | 21.7¢ | $59 | |
| Rhode Island | 29.2¢ | $80 | |
| South Carolina | 15.6¢ | $42 | |
| South Dakota | 15.4¢ | $42 | |
| Tennessee | 14.1¢ | $38 | |
| Texas | 15.9¢ | $43 | |
| Utah | 13.4¢ | $36 | |
| Vermont | 24.4¢ | $66 | |
| Virginia | 17.2¢ | $47 | |
| Washington | 14.9¢ | $41 | |
| West Virginia | 15.4¢ | $42 | |
| Wisconsin | 19.6¢ | $53 | |
| Wyoming | 15.2¢ | $41 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Coway Airmega AP-2023K | 277 | $51 |
| Coway AP-2023K | 277 | $51 |
| CUCKOO CAC-R1510FW | 281 | $52 |
| Dreo DR-HAP003S | 282 | $52 |
| Dreo Home DR-HAP003S | 282 | $52 |
| MEDIFY AIR MA-40-V4.0 | 261 | $48 |
Run your own numbers
Your rate, your numbers
- Per day
- 14¢
- Per month
- $4.16
- Per year
- $50
272 kWh/yr × 18.3¢/kWh = $50/yr
Prefilled with this model's certified 272 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 Winix AT40 use?
- ENERGY STAR certifies the Winix AT40 at 272 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 Winix AT40 cost to run per month?
- About $4.16 a month at the U.S. average residential rate (18.3¢/kWh) — 14¢ a day, or $50 a year. Your state's rate moves this up or down; see the table above.
- Is the Winix AT40 energy efficient?
- It uses 84% more electricity than the median certified air purifier, which puts it among the least efficient certified models.
- What does the Winix AT40 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $36 a year in Nevada (13.1¢/kWh) and $143 in Hawaii (52.7¢/kWh).