Sub-Zero CL4250UFD**/S/*: $134 a year to run
This model (Refrigerators) uses 637 kWh of electricity a year, which costs about $134 a year and $1,339 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
$1,339
Efficiency rank
4,196 / 4,667
10 % less energy than the federal minimum standard.
Product details
| Type | Bottom Freezer |
|---|---|
| Total volume (cu ft) | 24.7 |
| Adjusted volume (cu ft) | 29.5 |
| Refrigerant | R-600a |
| Federal standard (kWh/year) | 698 |
| ENERGY STAR Most Efficient | No |
| Available since | July 1, 2024 |
Compared with the average model (Refrigerators), this one costs about $53 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Dacor DRF36C500** | 635 | $133 |
| Samsung RF23B7671** | 635 | $133 |
| Dacor DRF36C700** | 634 | $133 |
| Samsung RF23D*9600** | 634 | $133 |
| Samsung RF23DB9700** | 634 | $133 |
| Samsung RF23DB9750** | 634 | $133 |
| GE GNE27JGM**** | 633 | $133 |
| GE GNE27JMM**** | 633 | $133 |
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Computers
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology