Model
Thermador T48IT100NP
Rank #928 means 927 of the 1,000 refrigerator models we track cost less to run each year; the 74th efficiency percentile means it uses less energy for its size than 74% of those models.
What does the Thermador T48IT100NP cost to run per year?
The Thermador T48IT100NP costs about $124 a year to run, well up the cost table for its class at rank #928 of 1,000. It uses 10% less energy than the U.S. federal standard model in its class, which would cost about $137/yr to run, a saving of roughly $13 a year. Its size-adjusted efficiency percentile of 74 is comfortably above the class median. This class has no published efficiency-factor figure beyond annual kWh itself, so at 26.8 cu ft (the class spans 1.2 to 31.7), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Lg LS27H3230* at $124/yr runs a little cheaper and the Dacor DRF487500** at $125/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A refrigerator typically stays in service for somewhere around 12 years; over that span, the Thermador T48IT100NP's $124/yr adds up to roughly $1488 in electricity alone, before purchase price or repairs.
By the numbers
The Thermador T48IT100NP normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $124/yr, here is what the Thermador T48IT100NP adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Thermador T48IT100NP costs about $1240. That is roughly $130 less than a standard model in its class, which would run closer to $1370 over the same ten years.
How the Thermador T48IT100NP compares
The refrigerator class we track runs from $8 to $149 a year. At $124/yr, it runs about $60 a year above the class median of $64, and it is about $116 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $137/yr, the Thermador T48IT100NP uses 10% less energy.
What drives its running cost
At 26.8 cu ft, the Thermador T48IT100NP is a large refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up.
- Interior volume. More cubic feet of cold air to maintain generally means a bigger compressor and a higher running-cost figure, even among efficient models.
- Counter depth vs standard depth. Standard-depth models generally offer more interior volume per unit of width than counter-depth models, a tradeoff between built-in looks and cubic feet.
- Compressor technology. How a compressor cycles, full on/off versus a variable-speed inverter design, is one of the biggest hidden differences behind two fridges with similar cubic feet but different running costs.
- Placement and ventilation. Ventilation clearance around the back and top matters more than most owners expect; a fridge starved of airflow runs its compressor longer to hold the same temperature.
Common questions
Is the Thermador T48IT100NP cheap to run?
Its $124/yr running cost, rank #928 of 1,000, is above what most refrigerator models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Thermador T48IT100NP cost per month?
About $10.36 a month, which is the $124 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 670 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $124 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Thermador T48IT100NP for its size?
74th percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 927 | Lg LS27H3230*26.6 cu ft | $124 |
| 926 | Frigidaire GRFC2353A*22.7 cu ft | $124 |
| 925 | Ge GSE28NYY****27.9 cu ft | $124 |
| 924 | Frigidaire GRMC2273B*21.5 cu ft | $124 |
| 923 | Ge Profile PYE22PYN****22.2 cu ft | $123 |
Source
ES_31649_T48IT100NP_021920241645529_9310344View certified refrigerator listingsENERGY STAR data as of July 2026Thermador and T48IT100NP are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.