Every ENERGY STAR certified Mainstays fridge in the EPA data, with yearly running cost.
Source: EPA ENERGY STAR Certified Residential Refrigerators dataset, data.energystar.gov. Refreshed Oct 24, 2026.
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| Rank | Model | Energy | Cost |
|---|---|---|---|
| #225 of 259, under 2 cu ft | Mainstays MS953619315304 | 246 kWh | $45 at 18.16¢/kWh/yr |
| #225 of 259, under 2 cu ft | Mainstays MS953619315305 | 246 kWh | $45 at 18.16¢/kWh/yr |
| #144 of 170, 2–3 cu ft | Mainstays MS953619315303 | 255 kWh | $46 at 18.16¢/kWh/yr |
| #343 of 526, 3–4 cu ft | Mainstays MS953619315302 | 260 kWh | $47 at 18.16¢/kWh/yr |
| #380 of 526, 3–4 cu ft | Mainstays MS553614756001 | 270 kWh | $49 at 18.16¢/kWh/yr |
| #175 of 362, 4–5 cu ft | Mainstays ARM44A5ASLT | 269 kWh | $49 at 18.16¢/kWh/yr |
| #241 of 372, 5+ cu ft | Mainstays MS953619315307 | 344 kWh | $62 at 18.16¢/kWh/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.