Every ENERGY STAR certified Dukers commercial refrigerators and freezer in the EPA data, with yearly running cost.
Source: EPA ENERGY STAR Certified Commercial Refrigerators and Freezers dataset, data.energystar.gov. Refreshed Oct 24, 2026.
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| Rank | Model | Energy | Cost |
|---|---|---|---|
| #287 of 312, under 20 cu ft | Dukers D28R | 485 kWh | $70 at 14.47¢/kWh commercial/yr |
| #102 of 141, 30–50 cu ft | Dukers D55R | 847 kWh | $123 at 14.47¢/kWh commercial/yr |
Grouped by type and size band, cheapest to run first. Each rank is by yearly cost within the model's own type and size band.