WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero CL3650R**/S

Running around the clock, the Sub-Zero CL3650R**/S uses a certified 370 kWh per year — about $70 at the U.S. average rate, or $5.81 a month, the equivalent of a steady 42-watt draw. Even among certified models it's on the thirsty end: 28% more electricity than the median freezerless-and-single-door refrigerator, ranked 259 of 259. Where you live moves the bill from $46 a year in North Dakota to $172 in Hawaii.

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

Dimensions 84" H × 36" W

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

$70/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$5.81
Per day
19¢
Certified use
370 kWh/yr
Configuration
Freezerless and Single Door
Total capacity
22.8 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero CL3650R**/S (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero CL3650R**/S: 370 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$64
Alaska27.4¢$101
Arizona15.5¢$57
Arkansas14.2¢$52
California35.3¢$130
Colorado16.5¢$61
Connecticut32.2¢$119
Delaware18.8¢$70
District of Columbia25.4¢$94
Florida15.4¢$57
Georgia15.4¢$57
Hawaiipriciest46.6¢$172
Idaho12.7¢$47
Illinois20.5¢$76
Indiana17.9¢$66
Iowa13.9¢$51
Kansas15.8¢$58
Kentucky15.0¢$56
Louisiana14.4¢$53
Maine28.4¢$105
Maryland22.1¢$82
Massachusetts29.4¢$109
Michigan21.4¢$79
Minnesota16.4¢$61
Mississippi16.8¢$62
Missouri14.0¢$52
Montana13.9¢$51
Nebraska13.3¢$49
Nevada14.3¢$53
New Hampshire27.2¢$101
New Jersey23.5¢$87
New Mexico15.2¢$56
New York29.4¢$109
North Carolina16.3¢$60
North Dakotacheapest12.3¢$46
Ohio19.5¢$72
Oklahoma13.3¢$49
Oregon15.8¢$58
Pennsylvania21.5¢$79
Rhode Island28.3¢$105
South Carolina17.1¢$63
South Dakota14.5¢$54
Tennessee14.9¢$55
Texas17.0¢$63
Utah13.3¢$49
Vermont24.6¢$91
Virginia17.4¢$64
Washington14.4¢$53
West Virginia16.1¢$59
Wisconsin19.2¢$71
Wyoming14.7¢$54

Certified models closest in efficiency

freezerless-and-single-door refrigerators within reach of 370 kWh/yr
ModelkWh/yr$/yr (US avg)
Monogram ZIR360NN364$69
Monogram ZIR360NP364$69
Monogram ZIRS360NN364$69
Monogram ZIRS360NP364$69
Gaggenau RVC497790362$68
Sub-Zero DEC3650R362$68

Run your own numbers

Your rate, your numbers

Per day
19¢
Per month
$5.81
Per year
$70

370 kWh/yr × 18.8¢/kWh = $70/yr

Prefilled with this model's certified 370 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 CL3650R**/S use?
ENERGY STAR certifies the Sub-Zero CL3650R**/S at 370 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 CL3650R**/S cost to run per month?
About $5.81 a month at the U.S. average residential rate (18.8¢/kWh) — 19¢ a day, or $70 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero CL3650R**/S energy efficient?
It uses 28% more electricity than the median certified freezerless-and-single-door refrigerator, which puts it among the least efficient certified models.
What does the Sub-Zero CL3650R**/S cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $46 a year in North Dakota (12.3¢/kWh) and $172 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero CL3650R**/S draw on average?
Spread over a year of continuous operation, 370 kWh works out to an average draw of about 42 watts — like leaving a 42-watt bulb on 24/7.

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