Wallmaster WCVT12B30B: $134 a year to run
This model (Room air conditioners) uses 637 kWh of electricity a year, which costs about $134 a year and $1,338 over 10 years at 21.0¢/kWh.
Energy use
637 kWh
per year
Running cost per year
$134
21.0¢/kWh
Running cost over 10 years
$1,338
Efficiency rank
433 / 589
46 % less energy than the federal minimum standard.
Product details
| Type | Through the Wall |
|---|---|
| Cooling capacity (BTU/h) | 11800 |
| Refrigerant | R-32 |
| ENERGY STAR Most Efficient | Yes |
| Available since | June 2, 2026 |
Compared with the average model (Room air conditioners), this one costs about $11 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Friedrich WCVT10B10A | 635 | $133 |
| Friedrich WCVT12B10B | 596 | $125 |
| Friedrich WCVT10B10B | 534 | $112 |
| Brothers 102397 | 532 | $112 |
| Brothers 102399 | 532 | $112 |
| DuraSTAR DRTAC101XVB1 | 532 | $112 |
| DuraSTAR DRTAC102XVB1 | 532 | $112 |
| Frigidaire FHTC105WC1 | 532 | $112 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Computers
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology