WattCost

Data through June 2026

Running cost · Freezers · ENERGY STAR certified

Sub-Zero CL3650F/S

Running around the clock, the Sub-Zero CL3650F/S uses a certified 640 kWh per year — about $117 at the U.S. average rate, or $9.78 a month, the equivalent of a steady 73-watt draw. Even among certified models it's on the thirsty end: 46% more electricity than the median upright freezer, ranked 449 of 451. Where you live moves the bill from $84 a year in Nevada to $337 in Hawaii.

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

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

$117/yr

$25 · cheapest certified freezers$119 · priciest
Per month
$9.78
Per day
32¢
Certified use
640 kWh/yr
Configuration
Upright Freezer
Total capacity
20.6 cu ft
Defrost
Automatic
Compact
No
137 kWh649 kWh
Where the Sub-Zero CL3650F/S (▮) sits among all 594 certified freezers, by annual kWh

What it costs in every state

Sub-Zero CL3650F/S: 640 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$105
Alaska28.2¢$181
Arizona15.2¢$97
Arkansas14.1¢$90
California34.7¢$222
Colorado17.1¢$110
Connecticut24.3¢$156
Delaware19.3¢$123
District of Columbia24.4¢$156
Florida15.1¢$97
Georgia16.4¢$105
Hawaiipriciest52.7¢$337
Idaho14.4¢$92
Illinois19.9¢$127
Indiana17.5¢$112
Iowa15.9¢$102
Kansas15.7¢$101
Kentucky14.3¢$91
Louisiana13.5¢$86
Maine29.6¢$189
Maryland21.8¢$140
Massachusetts29.6¢$190
Michigan23.0¢$147
Minnesota17.5¢$112
Mississippi14.9¢$95
Missouri16.2¢$104
Montana15.1¢$97
Nebraska13.3¢$85
Nevadacheapest13.1¢$84
New Hampshire27.0¢$173
New Jersey24.9¢$160
New Mexico15.1¢$96
New York29.5¢$189
North Carolina14.7¢$94
North Dakota14.1¢$90
Ohio19.2¢$123
Oklahoma14.3¢$92
Oregon16.3¢$104
Pennsylvania21.7¢$139
Rhode Island29.2¢$187
South Carolina15.6¢$100
South Dakota15.4¢$98
Tennessee14.1¢$90
Texas15.9¢$102
Utah13.4¢$86
Vermont24.4¢$156
Virginia17.2¢$110
Washington14.9¢$95
West Virginia15.4¢$99
Wisconsin19.6¢$125
Wyoming15.2¢$98

Certified models closest in efficiency

upright freezers within reach of 640 kWh/yr
ModelkWh/yr$/yr (US avg)
Fhiaba S360FZ3IU632$116
Fhiaba S360FZ6IU632$116
VIKING RANGE,LLC FDFZIC7360L632$116
VIKING RANGE,LLC FDFZIC7360R632$116
Monogram ZIF361NBR649$119
Monogram ZIF361NPR649$119

Run your own numbers

Your rate, your numbers

Per day
32¢
Per month
$9.78
Per year
$117

640 kWh/yr × 18.3¢/kWh = $117/yr

Prefilled with this model's certified 640 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.

Questions, answered with the data

How much electricity does the Sub-Zero CL3650F/S use?
ENERGY STAR certifies the Sub-Zero CL3650F/S at 640 kWh per year. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures.
How much does the Sub-Zero CL3650F/S cost to run per month?
About $9.78 a month at the U.S. average residential rate (18.3¢/kWh) — 32¢ a day, or $117 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero CL3650F/S energy efficient?
It uses 46% more electricity than the median certified upright freezer, which puts it among the least efficient certified models.
What does the Sub-Zero CL3650F/S cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $84 a year in Nevada (13.1¢/kWh) and $337 in Hawaii (52.7¢/kWh).
How many watts does the Sub-Zero CL3650F/S draw on average?
Spread over a year of continuous operation, 640 kWh works out to an average draw of about 73 watts — like leaving a 73-watt bulb on 24/7.

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