WattCost

Data through April 2026

Running cost · Freezers · ENERGY STAR certified

Sub-Zero DEC2450FI

The Sub-Zero DEC2450FI never switches off, and its certified 512 kWh a year works out to about $96 on a U.S.-average electric bill — roughly $8.03 a month for an average continuous draw of 58 watts. It sits near the bottom of the certified table — using 17% more than the median upright freezer (rank 370 of 431) — so the state you live in matters more than usual. The same unit costs $63 a year in North Dakota but $239 in Hawaii — electricity rates, not the appliance, make the difference.

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

$96/yr

$26 · cheapest certified freezers$122 · priciest
Per month
$8.03
Per day
26¢
Certified use
512 kWh/yr
Configuration
Upright Freezer
Total capacity
12.4 cu ft
Defrost
Automatic
Compact
No
137 kWh649 kWh
Where the Sub-Zero DEC2450FI (▮) sits among all 568 certified freezers, by annual kWh

What it costs in every state

Sub-Zero DEC2450FI: 512 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$89
Alaska27.4¢$140
Arizona15.5¢$79
Arkansas14.2¢$72
California35.3¢$180
Colorado16.5¢$85
Connecticut32.2¢$165
Delaware18.8¢$96
District of Columbia25.4¢$130
Florida15.4¢$79
Georgia15.4¢$79
Hawaiipriciest46.6¢$239
Idaho12.7¢$65
Illinois20.5¢$105
Indiana17.9¢$92
Iowa13.9¢$71
Kansas15.8¢$81
Kentucky15.0¢$77
Louisiana14.4¢$74
Maine28.4¢$146
Maryland22.1¢$113
Massachusetts29.4¢$151
Michigan21.4¢$110
Minnesota16.4¢$84
Mississippi16.8¢$86
Missouri14.0¢$72
Montana13.9¢$71
Nebraska13.3¢$68
Nevada14.3¢$73
New Hampshire27.2¢$139
New Jersey23.5¢$120
New Mexico15.2¢$78
New York29.4¢$151
North Carolina16.3¢$83
North Dakotacheapest12.3¢$63
Ohio19.5¢$100
Oklahoma13.3¢$68
Oregon15.8¢$81
Pennsylvania21.5¢$110
Rhode Island28.3¢$145
South Carolina17.1¢$87
South Dakota14.5¢$74
Tennessee14.9¢$76
Texas17.0¢$87
Utah13.3¢$68
Vermont24.6¢$126
Virginia17.4¢$89
Washington14.4¢$74
West Virginia16.1¢$82
Wisconsin19.2¢$98
Wyoming14.7¢$75

Certified models closest in efficiency

upright freezers within reach of 512 kWh/yr
ModelkWh/yr$/yr (US avg)
Bertazzoni REF24FCBIPNV511$96
Elica EC24SLA12IPR511$96
FULGOR MILANO FM4CF24IFBI511$96
HALLMAN HRBIAF24PR511$96
KOOLMORE KM-PRC-F24511$96
KUCHT KR240TF511$96

Run your own numbers

Your rate, your numbers

Per day
26¢
Per month
$8.03
Per year
$96

512 kWh/yr × 18.8¢/kWh = $96/yr

Prefilled with this model's certified 512 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 DEC2450FI use?
ENERGY STAR certifies the Sub-Zero DEC2450FI at 512 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 DEC2450FI cost to run per month?
About $8.03 a month at the U.S. average residential rate (18.8¢/kWh) — 26¢ a day, or $96 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero DEC2450FI energy efficient?
It uses 17% more electricity than the median certified upright freezer, which puts it among the least efficient certified models.
What does the Sub-Zero DEC2450FI cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $63 a year in North Dakota (12.3¢/kWh) and $239 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero DEC2450FI draw on average?
Spread over a year of continuous operation, 512 kWh works out to an average draw of about 58 watts — like leaving a 58-watt bulb on 24/7.

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