WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero DEC3650R

Running around the clock, the Sub-Zero DEC3650R uses a certified 362 kWh per year — about $68 at the U.S. average rate, or $5.68 a month, the equivalent of a steady 41-watt draw. Even among certified models it's on the thirsty end: 25% more electricity than the median freezerless-and-single-door refrigerator, ranked 254 of 259. The same unit costs $45 a year in North Dakota but $169 in Hawaii — electricity rates, not the appliance, make the difference.

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

$68/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$5.68
Per day
19¢
Certified use
362 kWh/yr
Configuration
Freezerless and Single Door
Total capacity
21.7 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero DEC3650R (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero DEC3650R: 362 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$63
Alaska27.4¢$99
Arizona15.5¢$56
Arkansas14.2¢$51
California35.3¢$128
Colorado16.5¢$60
Connecticut32.2¢$117
Delaware18.8¢$68
District of Columbia25.4¢$92
Florida15.4¢$56
Georgia15.4¢$56
Hawaiipriciest46.6¢$169
Idaho12.7¢$46
Illinois20.5¢$74
Indiana17.9¢$65
Iowa13.9¢$50
Kansas15.8¢$57
Kentucky15.0¢$54
Louisiana14.4¢$52
Maine28.4¢$103
Maryland22.1¢$80
Massachusetts29.4¢$107
Michigan21.4¢$77
Minnesota16.4¢$59
Mississippi16.8¢$61
Missouri14.0¢$51
Montana13.9¢$50
Nebraska13.3¢$48
Nevada14.3¢$52
New Hampshire27.2¢$99
New Jersey23.5¢$85
New Mexico15.2¢$55
New York29.4¢$107
North Carolina16.3¢$59
North Dakotacheapest12.3¢$45
Ohio19.5¢$71
Oklahoma13.3¢$48
Oregon15.8¢$57
Pennsylvania21.5¢$78
Rhode Island28.3¢$102
South Carolina17.1¢$62
South Dakota14.5¢$53
Tennessee14.9¢$54
Texas17.0¢$62
Utah13.3¢$48
Vermont24.6¢$89
Virginia17.4¢$63
Washington14.4¢$52
West Virginia16.1¢$58
Wisconsin19.2¢$70
Wyoming14.7¢$53

Certified models closest in efficiency

freezerless-and-single-door refrigerators within reach of 362 kWh/yr
ModelkWh/yr$/yr (US avg)
Gaggenau RVC497790362$68
Jenn-Air JBRF*36IGX360$68
Monogram ZIR360NN364$69
Monogram ZIR360NP364$69
Monogram ZIRS360NN364$69
Monogram ZIRS360NP364$69

Run your own numbers

Your rate, your numbers

Per day
19¢
Per month
$5.68
Per year
$68

362 kWh/yr × 18.8¢/kWh = $68/yr

Prefilled with this model's certified 362 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 DEC3650R use?
ENERGY STAR certifies the Sub-Zero DEC3650R at 362 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 DEC3650R cost to run per month?
About $5.68 a month at the U.S. average residential rate (18.8¢/kWh) — 19¢ a day, or $68 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero DEC3650R energy efficient?
It uses 25% 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 DEC3650R cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $45 a year in North Dakota (12.3¢/kWh) and $169 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero DEC3650R draw on average?
Spread over a year of continuous operation, 362 kWh works out to an average draw of about 41 watts — like leaving a 41-watt bulb on 24/7.

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