WattCost

Data through June 2026

Running cost · Freezers · ENERGY STAR certified

Sub-Zero ID-30FI

The Sub-Zero ID-30FI never switches off, and its certified 399 kWh a year works out to about $73 on a U.S.-average electric bill — roughly $6.10 a month for an average continuous draw of 46 watts. It sits near the bottom of the certified table — using 60% more than the median compact freezer (rank 133 of 134) — so the state you live in matters more than usual. The same unit costs $52 a year in Nevada but $210 in Hawaii — electricity rates, not the appliance, make the difference.

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

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

$73/yr

$25 · cheapest certified freezers$119 · priciest
Per month
$6.10
Per day
20¢
Certified use
399 kWh/yr
Configuration
Compact
Total capacity
5.1 cu ft
Defrost
Automatic
Compact
Yes
137 kWh649 kWh
Where the Sub-Zero ID-30FI (▮) sits among all 594 certified freezers, by annual kWh

What it costs in every state

Sub-Zero ID-30FI: 399 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$65
Alaska28.2¢$113
Arizona15.2¢$61
Arkansas14.1¢$56
California34.7¢$139
Colorado17.1¢$68
Connecticut24.3¢$97
Delaware19.3¢$77
District of Columbia24.4¢$97
Florida15.1¢$60
Georgia16.4¢$65
Hawaiipriciest52.7¢$210
Idaho14.4¢$57
Illinois19.9¢$79
Indiana17.5¢$70
Iowa15.9¢$64
Kansas15.7¢$63
Kentucky14.3¢$57
Louisiana13.5¢$54
Maine29.6¢$118
Maryland21.8¢$87
Massachusetts29.6¢$118
Michigan23.0¢$92
Minnesota17.5¢$70
Mississippi14.9¢$59
Missouri16.2¢$65
Montana15.1¢$60
Nebraska13.3¢$53
Nevadacheapest13.1¢$52
New Hampshire27.0¢$108
New Jersey24.9¢$100
New Mexico15.1¢$60
New York29.5¢$118
North Carolina14.7¢$59
North Dakota14.1¢$56
Ohio19.2¢$77
Oklahoma14.3¢$57
Oregon16.3¢$65
Pennsylvania21.7¢$87
Rhode Island29.2¢$117
South Carolina15.6¢$62
South Dakota15.4¢$61
Tennessee14.1¢$56
Texas15.9¢$64
Utah13.4¢$53
Vermont24.4¢$98
Virginia17.2¢$69
Washington14.9¢$59
West Virginia15.4¢$62
Wisconsin19.6¢$78
Wyoming15.2¢$61

Certified models closest in efficiency

compact freezers within reach of 399 kWh/yr
ModelkWh/yr$/yr (US avg)
Hisense FU06N3ASE408$75
U-Line 1224FZRA390$72
U-Line FZ124390$72
U-Line UHFZ124-BS01B390$72
U-Line UHFZ124-IS01B390$72
U-Line UHFZ124-SS01B390$72

Run your own numbers

Your rate, your numbers

Per day
20¢
Per month
$6.10
Per year
$73

399 kWh/yr × 18.3¢/kWh = $73/yr

Prefilled with this model's certified 399 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 ID-30FI use?
ENERGY STAR certifies the Sub-Zero ID-30FI at 399 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 ID-30FI cost to run per month?
About $6.10 a month at the U.S. average residential rate (18.3¢/kWh) — 20¢ a day, or $73 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero ID-30FI energy efficient?
It uses 60% more electricity than the median certified compact freezer, which puts it among the least efficient certified models.
What does the Sub-Zero ID-30FI cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $52 a year in Nevada (13.1¢/kWh) and $210 in Hawaii (52.7¢/kWh).
How many watts does the Sub-Zero ID-30FI draw on average?
Spread over a year of continuous operation, 399 kWh works out to an average draw of about 46 watts — like leaving a 46-watt bulb on 24/7.

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