Model
Miele KFN 9859 iDE li
Rank #768 means 767 of the 1,000 refrigerator models we track cost less to run each year; the 39th efficiency percentile means it uses less energy for its size than 39% of those models.
What does the Miele KFN 9859 iDE li cost to run per year?
At about $98 a year, the Miele KFN 9859 iDE li costs more to run than most refrigerator models we track, rank #768 of 1,000. It uses 11% less energy than the U.S. federal standard model in its class, which would cost about $108/yr to run, a saving of roughly $10 a year. Its size-adjusted efficiency percentile of 39 suggests its capacity is doing more work than its efficiency to keep the headline cost down. Its listing marks it counter-depth, meaning it sits nearly flush with surrounding cabinets rather than protruding a few extra inches like a standard-depth model; that shallower body usually means less interior volume for the same footprint.
Immediately around it on the leaderboard, the Liebherr HC 1580G at $98/yr runs a little cheaper and the Miele KF 2911 SF at $99/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 Miele KFN 9859 iDE li's $98/yr adds up to roughly $1176 in electricity alone, before purchase price or repairs.
Also sold as: Liebherr HC 1580G.
By the numbers
The Miele KFN 9859 iDE li 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 $98/yr, here is what the Miele KFN 9859 iDE li adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Miele KFN 9859 iDE li costs about $980. That is roughly $100 less than a standard model in its class, which would run closer to $1080 over the same ten years.
How the Miele KFN 9859 iDE li compares
The refrigerator class we track runs from $8 to $149 a year. At $98/yr, it runs about $34 a year above the class median of $64, and it is about $90 a year more than the cheapest refrigerator to run at $8. Against the US federal standard model for its class at about $108/yr, the Miele KFN 9859 iDE li uses 11% less energy.
What drives its running cost
At 14.1 cu ft, the Miele KFN 9859 iDE li is a mid-size refrigerator for its class, which spans 1.2 to 31.7 cu ft with a median of 12.6 cu ft, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone.
- 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.
- 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.
- 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 Miele KFN 9859 iDE li cheap to run?
Its $98/yr running cost, rank #768 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 Miele KFN 9859 iDE li cost per month?
About $8.2 a month, which is the $98 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: 530 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $98 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Miele KFN 9859 iDE li for its size?
39th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 768 | Liebherr HC 1580G14.1 cu ft | $98 |
| 767 | Fisher & Paykel RF178ANJX118 cu ft | $98 |
| 766 | Ge GNE25DYR****24.7 cu ft | $97 |
| 765 | Midea MRU21C7***20 cu ft | $97 |
| 764 | Vitara VBFR1800EWE18 cu ft | $96 |
Source
ES_31629_KFN 9859 iDE li_121920252120145_7625708View certified refrigerator listingsENERGY STAR data as of July 2026Miele and KFN 9859 iDE li 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.