WattCost

Data through June 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 $2.80 a month for an average continuous draw of 21 watts. Only a handful of certified compact refrigerators do better: it ranks 41 of 1645 and undercuts the median by 26%. The same unit costs $24 a year in Nevada but $96 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

Uses 36% less energy than the U.S. federal minimum

Dimensions 34" H × 15" W

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

$34/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$2.80
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 4,371 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
Alabama16.4¢$30
Alaska28.2¢$52
Arizona15.2¢$28
Arkansas14.1¢$26
California34.7¢$64
Colorado17.1¢$31
Connecticut24.3¢$45
Delaware19.3¢$35
District of Columbia24.4¢$45
Florida15.1¢$28
Georgia16.4¢$30
Hawaiipriciest52.7¢$96
Idaho14.4¢$26
Illinois19.9¢$36
Indiana17.5¢$32
Iowa15.9¢$29
Kansas15.7¢$29
Kentucky14.3¢$26
Louisiana13.5¢$25
Maine29.6¢$54
Maryland21.8¢$40
Massachusetts29.6¢$54
Michigan23.0¢$42
Minnesota17.5¢$32
Mississippi14.9¢$27
Missouri16.2¢$30
Montana15.1¢$28
Nebraska13.3¢$24
Nevadacheapest13.1¢$24
New Hampshire27.0¢$49
New Jersey24.9¢$46
New Mexico15.1¢$28
New York29.5¢$54
North Carolina14.7¢$27
North Dakota14.1¢$26
Ohio19.2¢$35
Oklahoma14.3¢$26
Oregon16.3¢$30
Pennsylvania21.7¢$40
Rhode Island29.2¢$53
South Carolina15.6¢$28
South Dakota15.4¢$28
Tennessee14.1¢$26
Texas15.9¢$29
Utah13.4¢$24
Vermont24.4¢$45
Virginia17.2¢$32
Washington14.9¢$27
West Virginia15.4¢$28
Wisconsin19.6¢$36
Wyoming15.2¢$28

Certified models closest in efficiency

compact refrigerators within reach of 183 kWh/yr
ModelkWh/yr$/yr (US avg)
Marvel MA24RA1Smost efficient185$34
DOMETIC DM50C Dmost efficient186$34
Frigidaire FFCS0762AWmost efficient180$33
Hisense FV06C7ASEmost efficient186$34
Liebherr UBC3760most efficient180$33
Miele Dreams Cool Mmost efficient180$33

Run your own numbers

Your rate, your numbers

Per day
9¢
Per month
$2.80
Per year
$34

183 kWh/yr × 18.3¢/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 $2.80 a month at the U.S. average residential rate (18.3¢/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 $24 a year in Nevada (13.1¢/kWh) and $96 in Hawaii (52.7¢/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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