WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

COSMO COS-RFFL234RSS

Running around the clock, the COSMO COS-RFFL234RSS uses a certified 603 kWh per year — about $111 at the U.S. average rate, or $9.22 a month, the equivalent of a steady 69-watt draw. That's close to the middle of the certified pack — about 7% above the median bottom-freezer refrigerator, ranked 964 of 1478. The same unit costs $79 a year in Nevada but $318 in Hawaii — electricity rates, not the appliance, make the difference.

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

Dimensions 70.4" H × 36" W

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

$111/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$9.22
Per day
30¢
Certified use
603 kWh/yr
Configuration
Bottom Freezer
Total capacity
22.7 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
No
42 kWh805 kWh
Where the COSMO COS-RFFL234RSS (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

COSMO COS-RFFL234RSS: 603 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$99
Alaska28.2¢$170
Arizona15.2¢$92
Arkansas14.1¢$85
California34.7¢$209
Colorado17.1¢$103
Connecticut24.3¢$147
Delaware19.3¢$116
District of Columbia24.4¢$147
Florida15.1¢$91
Georgia16.4¢$99
Hawaiipriciest52.7¢$318
Idaho14.4¢$87
Illinois19.9¢$120
Indiana17.5¢$106
Iowa15.9¢$96
Kansas15.7¢$95
Kentucky14.3¢$86
Louisiana13.5¢$81
Maine29.6¢$178
Maryland21.8¢$132
Massachusetts29.6¢$179
Michigan23.0¢$139
Minnesota17.5¢$106
Mississippi14.9¢$90
Missouri16.2¢$98
Montana15.1¢$91
Nebraska13.3¢$80
Nevadacheapest13.1¢$79
New Hampshire27.0¢$163
New Jersey24.9¢$150
New Mexico15.1¢$91
New York29.5¢$178
North Carolina14.7¢$89
North Dakota14.1¢$85
Ohio19.2¢$116
Oklahoma14.3¢$86
Oregon16.3¢$98
Pennsylvania21.7¢$131
Rhode Island29.2¢$176
South Carolina15.6¢$94
South Dakota15.4¢$93
Tennessee14.1¢$85
Texas15.9¢$96
Utah13.4¢$81
Vermont24.4¢$147
Virginia17.2¢$104
Washington14.9¢$90
West Virginia15.4¢$93
Wisconsin19.6¢$118
Wyoming15.2¢$92

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 603 kWh/yr
ModelkWh/yr$/yr (US avg)
COSMO COS-RFQL234RSS603$111
Hisense RF230C4CSEI603$111
Mora RQ230P7S*EM603$111
Whirlpool KRFC236S603$111
Whirlpool WRFC3036R603$111
BLUE STAR BBB36*3605$111

Run your own numbers

Your rate, your numbers

Per day
30¢
Per month
$9.22
Per year
$111

603 kWh/yr × 18.3¢/kWh = $111/yr

Prefilled with this model's certified 603 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 COSMO COS-RFFL234RSS use?
ENERGY STAR certifies the COSMO COS-RFFL234RSS at 603 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 COSMO COS-RFFL234RSS cost to run per month?
About $9.22 a month at the U.S. average residential rate (18.3¢/kWh) — 30¢ a day, or $111 a year. Your state's rate moves this up or down; see the table above.
Is the COSMO COS-RFFL234RSS energy efficient?
It uses 7% more electricity than the median certified bottom-freezer refrigerator.
What does the COSMO COS-RFFL234RSS cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $79 a year in Nevada (13.1¢/kWh) and $318 in Hawaii (52.7¢/kWh).
How many watts does the COSMO COS-RFFL234RSS draw on average?
Spread over a year of continuous operation, 603 kWh works out to an average draw of about 69 watts — like leaving a 69-watt bulb on 24/7.

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