Data through June 2026
Running cost · Air Purifiers · ENERGY STAR certified
Coway Airmega W
The Coway Airmega W's certified consumption is 197 kWh per year, which prices out to about $36 at the national average rate — your hours of use scale that directly. That's close to the middle of the certified pack — about 33% above the median air purifier, ranked 138 of 225. Where you live moves the bill from $26 a year in Nevada to $104 in Hawaii. 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
$36/yr
- Per month
- $3.01
- Per day
- 10¢
- Certified use
- 197 kWh/yr
- Rated room size
- 395 sq ft
- CADR (smoke)
- 255
- Technology
- Fan and Filter
- Efficiency
- 7.6 CFM/W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $32 | |
| Alaska | 28.2¢ | $56 | |
| Arizona | 15.2¢ | $30 | |
| Arkansas | 14.1¢ | $28 | |
| California | 34.7¢ | $68 | |
| Colorado | 17.1¢ | $34 | |
| Connecticut | 24.3¢ | $48 | |
| Delaware | 19.3¢ | $38 | |
| District of Columbia | 24.4¢ | $48 | |
| Florida | 15.1¢ | $30 | |
| Georgia | 16.4¢ | $32 | |
| Hawaiipriciest | 52.7¢ | $104 | |
| Idaho | 14.4¢ | $28 | |
| Illinois | 19.9¢ | $39 | |
| Indiana | 17.5¢ | $34 | |
| Iowa | 15.9¢ | $31 | |
| Kansas | 15.7¢ | $31 | |
| Kentucky | 14.3¢ | $28 | |
| Louisiana | 13.5¢ | $27 | |
| Maine | 29.6¢ | $58 | |
| Maryland | 21.8¢ | $43 | |
| Massachusetts | 29.6¢ | $58 | |
| Michigan | 23.0¢ | $45 | |
| Minnesota | 17.5¢ | $35 | |
| Mississippi | 14.9¢ | $29 | |
| Missouri | 16.2¢ | $32 | |
| Montana | 15.1¢ | $30 | |
| Nebraska | 13.3¢ | $26 | |
| Nevadacheapest | 13.1¢ | $26 | |
| New Hampshire | 27.0¢ | $53 | |
| New Jersey | 24.9¢ | $49 | |
| New Mexico | 15.1¢ | $30 | |
| New York | 29.5¢ | $58 | |
| North Carolina | 14.7¢ | $29 | |
| North Dakota | 14.1¢ | $28 | |
| Ohio | 19.2¢ | $38 | |
| Oklahoma | 14.3¢ | $28 | |
| Oregon | 16.3¢ | $32 | |
| Pennsylvania | 21.7¢ | $43 | |
| Rhode Island | 29.2¢ | $58 | |
| South Carolina | 15.6¢ | $31 | |
| South Dakota | 15.4¢ | $30 | |
| Tennessee | 14.1¢ | $28 | |
| Texas | 15.9¢ | $31 | |
| Utah | 13.4¢ | $26 | |
| Vermont | 24.4¢ | $48 | |
| Virginia | 17.2¢ | $34 | |
| Washington | 14.9¢ | $29 | |
| West Virginia | 15.4¢ | $30 | |
| Wisconsin | 19.6¢ | $39 | |
| Wyoming | 15.2¢ | $30 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| AIRMEGA W | 197 | $36 |
| Coway AP-1526D | 197 | $36 |
| AIRMEGA AP-1125G | 195 | $36 |
| Coway Airmega AP-1125G | 195 | $36 |
| Coway AP-1125G | 195 | $36 |
| LEVOIT LAP-C511S-WUSmost efficient | 194 | $36 |
Run your own numbers
Your rate, your numbers
- Per day
- 10¢
- Per month
- $3.01
- Per year
- $36
197 kWh/yr × 18.3¢/kWh = $36/yr
Prefilled with this model's certified 197 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 Coway Airmega W use?
- ENERGY STAR certifies the Coway Airmega W at 197 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 Coway Airmega W cost to run per month?
- About $3.01 a month at the U.S. average residential rate (18.3¢/kWh) — 10¢ a day, or $36 a year. Your state's rate moves this up or down; see the table above.
- Is the Coway Airmega W energy efficient?
- It uses 33% more electricity than the median certified air purifier.
- What does the Coway Airmega W cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $26 a year in Nevada (13.1¢/kWh) and $104 in Hawaii (52.7¢/kWh).