WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Thermador T42BT120NS

Running around the clock, the Thermador T42BT120NS uses a certified 631 kWh per year — about $119 at the U.S. average rate, or $9.90 a month, the equivalent of a steady 72-watt draw. Efficiency-wise it's unremarkable in a good way: within 12% of the median certified bottom-freezer refrigerator (rank 1051 of 1458). Where you live moves the bill from $78 a year in North Dakota to $294 in Hawaii.

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

Dimensions 84" H × 42" W

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$119/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$9.90
Per day
33¢
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 Thermador T42BT120NS (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Thermador T42BT120NS: 631 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$110
Alaska27.4¢$173
Arizona15.5¢$98
Arkansas14.2¢$89
California35.3¢$222
Colorado16.5¢$104
Connecticut32.2¢$203
Delaware18.8¢$119
District of Columbia25.4¢$160
Florida15.4¢$97
Georgia15.4¢$97
Hawaiipriciest46.6¢$294
Idaho12.7¢$80
Illinois20.5¢$129
Indiana17.9¢$113
Iowa13.9¢$87
Kansas15.8¢$100
Kentucky15.0¢$95
Louisiana14.4¢$91
Maine28.4¢$179
Maryland22.1¢$139
Massachusetts29.4¢$186
Michigan21.4¢$135
Minnesota16.4¢$103
Mississippi16.8¢$106
Missouri14.0¢$88
Montana13.9¢$88
Nebraska13.3¢$84
Nevada14.3¢$90
New Hampshire27.2¢$172
New Jersey23.5¢$148
New Mexico15.2¢$96
New York29.4¢$186
North Carolina16.3¢$103
North Dakotacheapest12.3¢$78
Ohio19.5¢$123
Oklahoma13.3¢$84
Oregon15.8¢$100
Pennsylvania21.5¢$135
Rhode Island28.3¢$179
South Carolina17.1¢$108
South Dakota14.5¢$92
Tennessee14.9¢$94
Texas17.0¢$107
Utah13.3¢$84
Vermont24.6¢$155
Virginia17.4¢$110
Washington14.4¢$91
West Virginia16.1¢$101
Wisconsin19.2¢$121
Wyoming14.7¢$93

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 631 kWh/yr
ModelkWh/yr$/yr (US avg)
Miele KFMC 3858 FD631$119
Samsung RF23DB9900631$119
Thermador T42BT110NS631$119
Thermador T42IT100NP631$119
Continental Electric CE-FRF192630$119
COSMO COS-RFFV283GHBK630$119

Run your own numbers

Your rate, your numbers

Per day
33¢
Per month
$9.90
Per year
$119

631 kWh/yr × 18.8¢/kWh = $119/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 Thermador T42BT120NS use?
ENERGY STAR certifies the Thermador T42BT120NS 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 Thermador T42BT120NS cost to run per month?
About $9.90 a month at the U.S. average residential rate (18.8¢/kWh) — 33¢ a day, or $119 a year. Your state's rate moves this up or down; see the table above.
Is the Thermador T42BT120NS energy efficient?
It uses 12% more electricity than the median certified bottom-freezer refrigerator.
What does the Thermador T42BT120NS cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $78 a year in North Dakota (12.3¢/kWh) and $294 in Hawaii (46.6¢/kWh).
How many watts does the Thermador T42BT120NS 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.

Keep digging