WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

KOOLMORE KM-RERFDSS-18C

Running around the clock, the KOOLMORE KM-RERFDSS-18C uses a certified 465 kWh per year — about $88 at the U.S. average rate, or $7.30 a month, the equivalent of a steady 53-watt draw. Compared with the median certified bottom-freezer refrigerator, it uses 17% less electricity — rank 342 out of 1458. Where you live moves the bill from $57 a year in North Dakota to $217 in Hawaii.

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

Dimensions 66.7" H × 29.5" W

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

$88/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$7.30
Per day
24¢
Certified use
465 kWh/yr
Configuration
Bottom Freezer
Total capacity
18.4 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the KOOLMORE KM-RERFDSS-18C (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

KOOLMORE KM-RERFDSS-18C: 465 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$81
Alaska27.4¢$127
Arizona15.5¢$72
Arkansas14.2¢$66
California35.3¢$164
Colorado16.5¢$77
Connecticut32.2¢$150
Delaware18.8¢$87
District of Columbia25.4¢$118
Florida15.4¢$72
Georgia15.4¢$71
Hawaiipriciest46.6¢$217
Idaho12.7¢$59
Illinois20.5¢$95
Indiana17.9¢$83
Iowa13.9¢$64
Kansas15.8¢$73
Kentucky15.0¢$70
Louisiana14.4¢$67
Maine28.4¢$132
Maryland22.1¢$103
Massachusetts29.4¢$137
Michigan21.4¢$99
Minnesota16.4¢$76
Mississippi16.8¢$78
Missouri14.0¢$65
Montana13.9¢$65
Nebraska13.3¢$62
Nevada14.3¢$66
New Hampshire27.2¢$127
New Jersey23.5¢$109
New Mexico15.2¢$70
New York29.4¢$137
North Carolina16.3¢$76
North Dakotacheapest12.3¢$57
Ohio19.5¢$91
Oklahoma13.3¢$62
Oregon15.8¢$73
Pennsylvania21.5¢$100
Rhode Island28.3¢$132
South Carolina17.1¢$79
South Dakota14.5¢$68
Tennessee14.9¢$69
Texas17.0¢$79
Utah13.3¢$62
Vermont24.6¢$114
Virginia17.4¢$81
Washington14.4¢$67
West Virginia16.1¢$75
Wisconsin19.2¢$89
Wyoming14.7¢$68

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 465 kWh/yr
ModelkWh/yr$/yr (US avg)
Crosley CFDMH1834AB465$88
Crosley CFDMH1834AS465$88
Crosley CFDMH1834AW465$88
ELEMENT ERFD19CGC465$88
Elisii DFDBM184*W1465$88
Frigidaire FRFN1801AF465$88

Run your own numbers

Your rate, your numbers

Per day
24¢
Per month
$7.30
Per year
$88

465 kWh/yr × 18.8¢/kWh = $88/yr

Prefilled with this model's certified 465 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 KOOLMORE KM-RERFDSS-18C use?
ENERGY STAR certifies the KOOLMORE KM-RERFDSS-18C at 465 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 KOOLMORE KM-RERFDSS-18C cost to run per month?
About $7.30 a month at the U.S. average residential rate (18.8¢/kWh) — 24¢ a day, or $88 a year. Your state's rate moves this up or down; see the table above.
Is the KOOLMORE KM-RERFDSS-18C energy efficient?
It uses 17% less electricity than the median certified bottom-freezer refrigerator, placing it in the efficient third of certified models.
What does the KOOLMORE KM-RERFDSS-18C cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $57 a year in North Dakota (12.3¢/kWh) and $217 in Hawaii (46.6¢/kWh).
How many watts does the KOOLMORE KM-RERFDSS-18C draw on average?
Spread over a year of continuous operation, 465 kWh works out to an average draw of about 53 watts — like leaving a 53-watt bulb on 24/7.

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