Coway B: $27 a year to run
This model (Air purifiers) uses 128 kWh of electricity a year, which costs about $27 a year and $269 over 10 years at 21.0¢/kWh.
Energy use
128 kWh
per year
Running cost per year
$27
21.0¢/kWh
Running cost over 10 years
$269
Efficiency rank
97 / 240
Product details
| Room size (sq ft) | 183 |
|---|---|
| Technology | Fan and Filter |
| ENERGY STAR Most Efficient | No |
| Available since | June 1, 2025 |
Compared with the average model (Air purifiers), this one saves about $11 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Activepure E210A | 127 | $27 |
| Midea CAF-A40US(H) | 127 | $27 |
| PELONIS CAF-A40US(H) | 127 | $27 |
| Toshiba CAF-A40US(H) | 127 | $27 |
| CUCKOO CAC-AB0610FI | 126 | $26 |
| Greenlite G-Pure-22W | 126 | $26 |
| ISINLIVE vortex V2 | 126 | $26 |
| Midea 793K18A | 126 | $26 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Computers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology