What the Thermador T18IF901SP costs to run
The Thermador T18IF901SP is certified by ENERGY STAR at 418 kWh a year, about average for its category to run among freezers currently certified.
The $79 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Thermador T18IF901SP against the category
That's 4.2% above the freezer category average of 401 kWh/yr, and ranks 340 of 658 certified freezers for annual running cost, 1 being cheapest. The category average comes from every freezer ENERGY STAR currently certifies (658 models), not an outside benchmark, about $3/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
Whirlpool WZF57R16F*** ($79/yr, 419 kWh/yr) costs a little more to run than the Thermador T18IF901SP. Thermador T18IF900SP ($79/yr, 418 kWh/yr) costs a little less.
Same brand, different models
Thermador makes 15 ENERGY STAR certified freezers; this one ranks 3 of 15 for running cost, between the brand's cheapest, the T18IF905SP at $76/yr, and its priciest, the T36IF900SP at $102/yr.
Lifespan
NAHB's Study of Life Expectancy of Home Components does not publish a figure for freezers, so no lifetime cost is shown here rather than a guessed one. The annual and monthly figures above stand on their own.
Shopping for a new one
The Thermador T18IF901SP is already efficient for its category at $79/year. If you're shopping and comparing options, this is roughly what a well-chosen new freezer costs to run.
See what else is certified in this category before you decide.
Protecting what you have
The Thermador T18IF901SP already costs $79/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
Sourcing
Nothing here is estimated from a nameplate wattage; the 418 kWh/yr is ENERGY STAR's own certified figure for this model. The full Freezer category page shows all 658 freezers ranked by cost; the state-rate guide covers the half of this number that isn't the appliance.