Running cost for the Thermador T23IR905SP
At 270 kWh/yr, the Thermador T23IR905SP's ENERGY STAR certification puts it one of the cheaper models in its category to run against every other certified refrigerator.
That $51 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 30.1% less, ranking 1,482 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 $22/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 Thermador T23IR905SP: Newair NRF031GA00 ($51/yr, 270 kWh/yr), then U-Line 2224BEVB ($51/yr, 270 kWh/yr).
Same brand, different models
Ranked 7 of Thermador's 54 certified refrigerators, this sits between the T24IR905SP ($48/yr, the brand's cheapest) and the T48IT100NP ($126/yr, its priciest).
Cost over its typical lifespan
13 years is NAHB's typical service life for this category; at $51/year, the Thermador T23IR905SP adds up to about $660 in electricity over that span.
Is it worth replacing?
Efficient as certified refrigerators go, $51/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
$51/year to run is the predictable cost of the Thermador T23IR905SP; a protection plan covers the unpredictable one, a repair bill.
Where this number comes from
Ranked 1,482 of 4,704, the Thermador T23IR905SP sits in the middle of the refrigerator category, see the guide to why your state changes this number for the other half of the math. The 270 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.