Sub-Zero DEU2450R/ADA/ Running Cost (Refrigerator)
Sub-Zero DEU2450R/ADA/: running cost
The Sub-Zero DEU2450R/ADA/ is certified by ENERGY STAR at 159 kWh a year, one of the cheaper models in its category to run among refrigerators currently certified.
That $30 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a refrigerator
Against the category average of 386 kWh/yr, this model uses 58.8% less, ranking 162 of 4,704 refrigerators tracked here for running cost. That average is drawn from all 4,704 refrigerators ENERGY STAR currently certifies, not an outside number, a $43/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Sub-Zero DEU2450R/ADA/: Gorenje VCS5297TPGVCS5297TPG ($30/yr, 159 kWh/yr), then Zephyr PRPW24C01BG ($30/yr, 159 kWh/yr).
Same brand, different models
Of the 26 ENERGY STAR certified refrigerators Sub-Zero makes, the DEU2450R/ADA/ is the cheapest to run, $110/year less than Sub-Zero's priciest, the CL4850S/S/.
Cost over its typical lifespan
Over the 13-year service life NAHB reports for this category, running the Sub-Zero DEU2450R/ADA/ costs roughly $389 in electricity, separate from the purchase price.
Weighing a replacement
Efficient as certified refrigerators go, $30/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified refrigerators before buying.
If you're keeping it
Whether or not the Sub-Zero DEU2450R/ADA/ ever needs replacing, a repair is the more common failure for a refrigerator, one a protection plan budgets for ahead of time.
Where this number comes from
The full Refrigerator category page shows all 4,704 refrigerators ranked by cost; the state-rate guide covers the half of this number that isn't the appliance. The 159 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.