WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

Miele KFMC 3858 FD

The Miele KFMC 3858 FD never switches off, and its certified 631 kWh a year works out to about $116 on a U.S.-average electric bill — roughly $9.64 a month for an average continuous draw of 72 watts. Efficiency-wise it's unremarkable in a good way: within 12% of the median certified bottom-freezer refrigerator (rank 1058 of 1478). Where you live moves the bill from $83 a year in Nevada to $333 in Hawaii.

Uses 10% less energy than the U.S. federal minimum

Dimensions 83.8" H × 41.3" W

Estimated annual running cost · U.S. average rate 18.3¢/kWh

$116/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$9.64
Per day
32¢
Certified use
631 kWh/yr
Configuration
Bottom Freezer
Total capacity
23.1 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
No
42 kWh805 kWh
Where the Miele KFMC 3858 FD (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

Miele KFMC 3858 FD: 631 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$103
Alaska28.2¢$178
Arizona15.2¢$96
Arkansas14.1¢$89
California34.7¢$219
Colorado17.1¢$108
Connecticut24.3¢$153
Delaware19.3¢$122
District of Columbia24.4¢$154
Florida15.1¢$95
Georgia16.4¢$103
Hawaiipriciest52.7¢$333
Idaho14.4¢$91
Illinois19.9¢$126
Indiana17.5¢$110
Iowa15.9¢$101
Kansas15.7¢$99
Kentucky14.3¢$90
Louisiana13.5¢$85
Maine29.6¢$187
Maryland21.8¢$138
Massachusetts29.6¢$187
Michigan23.0¢$145
Minnesota17.5¢$111
Mississippi14.9¢$94
Missouri16.2¢$102
Montana15.1¢$96
Nebraska13.3¢$84
Nevadacheapest13.1¢$83
New Hampshire27.0¢$170
New Jersey24.9¢$157
New Mexico15.1¢$95
New York29.5¢$186
North Carolina14.7¢$93
North Dakota14.1¢$89
Ohio19.2¢$121
Oklahoma14.3¢$90
Oregon16.3¢$103
Pennsylvania21.7¢$137
Rhode Island29.2¢$184
South Carolina15.6¢$98
South Dakota15.4¢$97
Tennessee14.1¢$89
Texas15.9¢$101
Utah13.4¢$84
Vermont24.4¢$154
Virginia17.2¢$109
Washington14.9¢$94
West Virginia15.4¢$97
Wisconsin19.6¢$123
Wyoming15.2¢$96

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 631 kWh/yr
ModelkWh/yr$/yr (US avg)
Samsung RF23DB9900631$116
Thermador T42BT110NS631$116
Thermador T42BT120NS631$116
Thermador T42IT100NP631$116
Continental Electric CE-FRF192630$116
COSMO COS-RFFV283GHBK630$116

Run your own numbers

Your rate, your numbers

Per day
32¢
Per month
$9.64
Per year
$116

631 kWh/yr × 18.3¢/kWh = $116/yr

Prefilled with this model's certified 631 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.

Questions, answered with the data

How much electricity does the Miele KFMC 3858 FD use?
ENERGY STAR certifies the Miele KFMC 3858 FD at 631 kWh per year. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.
How much does the Miele KFMC 3858 FD cost to run per month?
About $9.64 a month at the U.S. average residential rate (18.3¢/kWh) — 32¢ a day, or $116 a year. Your state's rate moves this up or down; see the table above.
Is the Miele KFMC 3858 FD energy efficient?
It uses 12% more electricity than the median certified bottom-freezer refrigerator.
What does the Miele KFMC 3858 FD cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $83 a year in Nevada (13.1¢/kWh) and $333 in Hawaii (52.7¢/kWh).
How many watts does the Miele KFMC 3858 FD draw on average?
Spread over a year of continuous operation, 631 kWh works out to an average draw of about 72 watts — like leaving a 72-watt bulb on 24/7.

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