Sub-Zero Freezers: energy use and running cost
The average model uses 401 kWh a year, which costs $84 a year at 21.0¢/kWh.
Most efficient models
| Model | kWh/year | Cost/year |
|---|---|---|
| Sub-Zero ID-30F | 356 | $75 |
| Sub-Zero ID-24F | 377 | $79 |
| Sub-Zero ID-24FI | 377 | $79 |
| Sub-Zero ID-30FI | 399 | $84 |
| Sub-Zero DEC2450FI/* | 512 | $108 |
| Sub-Zero DEC3050FI/* | 561 | $118 |
| Sub-Zero DEC3650FI/* | 621 | $131 |
| Sub-Zero CL3650F/S/*/* | 640 | $135 |
- Refrigerators
- 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