WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero CL4250UFD**/S

The Sub-Zero CL4250UFD**/S never switches off, and its certified 637 kWh a year works out to about $120 on a U.S.-average electric bill — roughly $10.00 a month for an average continuous draw of 73 watts. That's close to the middle of the certified pack — about 13% above the median bottom-freezer refrigerator, ranked 1082 of 1458. Where you live moves the bill from $79 a year in North Dakota to $297 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

$120/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$10.00
Per day
33¢
Certified use
637 kWh/yr
Configuration
Bottom Freezer
Total capacity
24.7 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero CL4250UFD**/S (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero CL4250UFD**/S: 637 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$111
Alaska27.4¢$174
Arizona15.5¢$99
Arkansas14.2¢$90
California35.3¢$225
Colorado16.5¢$105
Connecticut32.2¢$205
Delaware18.8¢$120
District of Columbia25.4¢$162
Florida15.4¢$98
Georgia15.4¢$98
Hawaiipriciest46.6¢$297
Idaho12.7¢$81
Illinois20.5¢$130
Indiana17.9¢$114
Iowa13.9¢$88
Kansas15.8¢$101
Kentucky15.0¢$96
Louisiana14.4¢$92
Maine28.4¢$181
Maryland22.1¢$141
Massachusetts29.4¢$188
Michigan21.4¢$136
Minnesota16.4¢$104
Mississippi16.8¢$107
Missouri14.0¢$89
Montana13.9¢$89
Nebraska13.3¢$85
Nevada14.3¢$91
New Hampshire27.2¢$174
New Jersey23.5¢$150
New Mexico15.2¢$97
New York29.4¢$188
North Carolina16.3¢$104
North Dakotacheapest12.3¢$79
Ohio19.5¢$124
Oklahoma13.3¢$85
Oregon15.8¢$101
Pennsylvania21.5¢$137
Rhode Island28.3¢$180
South Carolina17.1¢$109
South Dakota14.5¢$92
Tennessee14.9¢$95
Texas17.0¢$108
Utah13.3¢$85
Vermont24.6¢$156
Virginia17.4¢$111
Washington14.4¢$91
West Virginia16.1¢$102
Wisconsin19.2¢$122
Wyoming14.7¢$94

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 637 kWh/yr
ModelkWh/yr$/yr (US avg)
Samsung RF70H25KE637$120
Cafe CHE23DM*W638$120
GE Profile PHD23BYW638$120
Dacor DRF36C500635$120
Samsung RF23B7671635$120
Dacor DRF36C700634$119

Run your own numbers

Your rate, your numbers

Per day
33¢
Per month
$10.00
Per year
$120

637 kWh/yr × 18.8¢/kWh = $120/yr

Prefilled with this model's certified 637 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 Sub-Zero CL4250UFD**/S use?
ENERGY STAR certifies the Sub-Zero CL4250UFD**/S at 637 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 Sub-Zero CL4250UFD**/S cost to run per month?
About $10.00 a month at the U.S. average residential rate (18.8¢/kWh) — 33¢ a day, or $120 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero CL4250UFD**/S energy efficient?
It uses 13% more electricity than the median certified bottom-freezer refrigerator.
What does the Sub-Zero CL4250UFD**/S cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $79 a year in North Dakota (12.3¢/kWh) and $297 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero CL4250UFD**/S draw on average?
Spread over a year of continuous operation, 637 kWh works out to an average draw of about 73 watts — like leaving a 73-watt bulb on 24/7.

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