Thermador T18ID905LP: running cost
ENERGY STAR certifies the Thermador T18ID905LP at 428 kWh/yr, about average for its category to run for its category.
That $80 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.
How the Thermador T18ID905LP compares to other freezers
The category average is 401 kWh/yr; this model runs 6.7% above it, ranking 350 of 658 freezers tracked here for running cost. 658 certified freezers, one average, about $5/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Thermador T18ID905LP on that list: Thermador T18ID900RP ($80/yr, 428 kWh/yr) runs slightly less, while Avanti AV160VFK0W ($81/yr, 429 kWh/yr) runs slightly more.
Within the Thermador lineup
Ranked 6 of Thermador's 15 certified freezers, this sits between the T18IF905SP ($76/yr, the brand's cheapest) and the T36IF900SP ($102/yr, its priciest).
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
Efficient as certified freezers go, $80/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified freezers before buying.
If you're keeping it
A freezer like the Thermador T18ID905LP is a real household expense whether or not it needs replacing yet; a protection plan is one way to budget for a repair rather than a full replacement.
How this was checked
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. 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.