WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero DEU1550B

The Sub-Zero DEU1550B never switches off, and its certified 183 kWh a year works out to about $34 on a U.S.-average electric bill — roughly $2.87 a month for an average continuous draw of 21 watts. Only a handful of certified compact refrigerators do better: it ranks 41 of 1589 and undercuts the median by 26%. The same unit costs $23 a year in North Dakota but $85 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

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

$34/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$2.87
Per day
9¢
Certified use
183 kWh/yr
Configuration
Compact Refrigerator
Total capacity
3.1 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero DEU1550B (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero DEU1550B: 183 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$32
Alaska27.4¢$50
Arizona15.5¢$28
Arkansas14.2¢$26
California35.3¢$65
Colorado16.5¢$30
Connecticut32.2¢$59
Delaware18.8¢$34
District of Columbia25.4¢$47
Florida15.4¢$28
Georgia15.4¢$28
Hawaiipriciest46.6¢$85
Idaho12.7¢$23
Illinois20.5¢$37
Indiana17.9¢$33
Iowa13.9¢$25
Kansas15.8¢$29
Kentucky15.0¢$27
Louisiana14.4¢$26
Maine28.4¢$52
Maryland22.1¢$40
Massachusetts29.4¢$54
Michigan21.4¢$39
Minnesota16.4¢$30
Mississippi16.8¢$31
Missouri14.0¢$26
Montana13.9¢$25
Nebraska13.3¢$24
Nevada14.3¢$26
New Hampshire27.2¢$50
New Jersey23.5¢$43
New Mexico15.2¢$28
New York29.4¢$54
North Carolina16.3¢$30
North Dakotacheapest12.3¢$23
Ohio19.5¢$36
Oklahoma13.3¢$24
Oregon15.8¢$29
Pennsylvania21.5¢$39
Rhode Island28.3¢$52
South Carolina17.1¢$31
South Dakota14.5¢$27
Tennessee14.9¢$27
Texas17.0¢$31
Utah13.3¢$24
Vermont24.6¢$45
Virginia17.4¢$32
Washington14.4¢$26
West Virginia16.1¢$29
Wisconsin19.2¢$35
Wyoming14.7¢$27

Certified models closest in efficiency

compact refrigerators within reach of 183 kWh/yr
ModelkWh/yr$/yr (US avg)
Marvel MA24RA1Smost efficient185$35
DOMETIC DM50C Dmost efficient186$35
Frigidaire FFCS0762AWmost efficient180$34
Hisense FV06C7ASEmost efficient186$35
Liebherr UBC3760most efficient180$34
Miele Dreams Cool Mmost efficient180$34

Run your own numbers

Your rate, your numbers

Per day
9¢
Per month
$2.87
Per year
$34

183 kWh/yr × 18.8¢/kWh = $34/yr

Prefilled with this model's certified 183 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 DEU1550B use?
ENERGY STAR certifies the Sub-Zero DEU1550B at 183 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 DEU1550B cost to run per month?
About $2.87 a month at the U.S. average residential rate (18.8¢/kWh) — 9¢ a day, or $34 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero DEU1550B energy efficient?
It uses 26% less electricity than the median certified compact refrigerator, placing it in the top 10% of certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the Sub-Zero DEU1550B cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $23 a year in North Dakota (12.3¢/kWh) and $85 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero DEU1550B draw on average?
Spread over a year of continuous operation, 183 kWh works out to an average draw of about 21 watts — like leaving a 21-watt bulb on 24/7.

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