Data through April 2026
Running cost · Air Purifiers · ENERGY STAR certified
COWAY AIRMEGA, COWAY, Coway Airmega 50
The COWAY AIRMEGA, COWAY, Coway Airmega 50's certified consumption is 67 kWh per year, which prices out to about $13 at the national average rate — your hours of use scale that directly. Compared with the median certified air purifier, it uses 55% less electricity — rank 31 out of 214. The same unit costs $8.27 a year in North Dakota but $31 in Hawaii — electricity rates, not the appliance, make the difference. 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
$13/yr
- Per month
- $1.05
- Per day
- 3¢
- Certified use
- 67 kWh/yr
- Rated room size
- 104 sq ft
- CADR (smoke)
- 67
- Technology
- Fan and Filter
- Efficiency
- 6.1 CFM/W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $12 | |
| Alaska | 27.4¢ | $18 | |
| Arizona | 15.5¢ | $10 | |
| Arkansas | 14.2¢ | $9.49 | |
| California | 35.3¢ | $24 | |
| Colorado | 16.5¢ | $11 | |
| Connecticut | 32.2¢ | $22 | |
| Delaware | 18.8¢ | $13 | |
| District of Columbia | 25.4¢ | $17 | |
| Florida | 15.4¢ | $10 | |
| Georgia | 15.4¢ | $10 | |
| Hawaiipriciest | 46.6¢ | $31 | |
| Idaho | 12.7¢ | $8.51 | |
| Illinois | 20.5¢ | $14 | |
| Indiana | 17.9¢ | $12 | |
| Iowa | 13.9¢ | $9.29 | |
| Kansas | 15.8¢ | $11 | |
| Kentucky | 15.0¢ | $10 | |
| Louisiana | 14.4¢ | $9.67 | |
| Maine | 28.4¢ | $19 | |
| Maryland | 22.1¢ | $15 | |
| Massachusetts | 29.4¢ | $20 | |
| Michigan | 21.4¢ | $14 | |
| Minnesota | 16.4¢ | $11 | |
| Mississippi | 16.8¢ | $11 | |
| Missouri | 14.0¢ | $9.39 | |
| Montana | 13.9¢ | $9.31 | |
| Nebraska | 13.3¢ | $8.90 | |
| Nevada | 14.3¢ | $9.57 | |
| New Hampshire | 27.2¢ | $18 | |
| New Jersey | 23.5¢ | $16 | |
| New Mexico | 15.2¢ | $10 | |
| New York | 29.4¢ | $20 | |
| North Carolina | 16.3¢ | $11 | |
| North Dakotacheapest | 12.3¢ | $8.27 | |
| Ohio | 19.5¢ | $13 | |
| Oklahoma | 13.3¢ | $8.92 | |
| Oregon | 15.8¢ | $11 | |
| Pennsylvania | 21.5¢ | $14 | |
| Rhode Island | 28.3¢ | $19 | |
| South Carolina | 17.1¢ | $11 | |
| South Dakota | 14.5¢ | $9.73 | |
| Tennessee | 14.9¢ | $10 | |
| Texas | 17.0¢ | $11 | |
| Utah | 13.3¢ | $8.90 | |
| Vermont | 24.6¢ | $16 | |
| Virginia | 17.4¢ | $12 | |
| Washington | 14.4¢ | $9.62 | |
| West Virginia | 16.1¢ | $11 | |
| Wisconsin | 19.2¢ | $13 | |
| Wyoming | 14.7¢ | $9.84 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| Blueair Pure 411most efficient | 64 | $12 |
| Honeywell HPA120most efficient | 72 | $14 |
| Honeywell HPA125most efficient | 72 | $14 |
| BLACK+DECKER BAPT02most efficient | 61 | $12 |
| Bionaire BAP9260 | 59 | $11 |
| Blueair 1831022000most efficient | 75 | $14 |
Run your own numbers
Your rate, your numbers
- Per day
- 3¢
- Per month
- $1.05
- Per year
- $13
67 kWh/yr × 18.8¢/kWh = $13/yr
Prefilled with this model's certified 67 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, COWAY, Coway Airmega 50 use?
- ENERGY STAR certifies the COWAY AIRMEGA, COWAY, Coway Airmega 50 at 67 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, COWAY, Coway Airmega 50 cost to run per month?
- About $1.05 a month at the U.S. average residential rate (18.8¢/kWh) — 3¢ a day, or $13 a year. Your state's rate moves this up or down; see the table above.
- Is the COWAY AIRMEGA, COWAY, Coway Airmega 50 energy efficient?
- It uses 55% 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 COWAY AIRMEGA, COWAY, Coway Airmega 50 cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $8.27 a year in North Dakota (12.3¢/kWh) and $31 in Hawaii (46.6¢/kWh).