WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

KOSTCH KOS-36RF

The KOSTCH KOS-36RF never switches off, and its certified 658 kWh a year works out to about $124 on a U.S.-average electric bill — roughly $10.33 a month for an average continuous draw of 75 watts. Even among certified models it's on the thirsty end: 17% more electricity than the median bottom-freezer refrigerator, ranked 1135 of 1458. Where you live moves the bill from $81 a year in North Dakota to $307 in Hawaii.

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

Dimensions 69.9" H × 35.8" W

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

$124/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$10.33
Per day
34¢
Certified use
658 kWh/yr
Configuration
Bottom Freezer
Total capacity
21.6 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
Yes
42 kWh805 kWh
Where the KOSTCH KOS-36RF (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

KOSTCH KOS-36RF: 658 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$115
Alaska27.4¢$180
Arizona15.5¢$102
Arkansas14.2¢$93
California35.3¢$232
Colorado16.5¢$109
Connecticut32.2¢$212
Delaware18.8¢$124
District of Columbia25.4¢$167
Florida15.4¢$101
Georgia15.4¢$101
Hawaiipriciest46.6¢$307
Idaho12.7¢$84
Illinois20.5¢$135
Indiana17.9¢$118
Iowa13.9¢$91
Kansas15.8¢$104
Kentucky15.0¢$99
Louisiana14.4¢$95
Maine28.4¢$187
Maryland22.1¢$145
Massachusetts29.4¢$194
Michigan21.4¢$141
Minnesota16.4¢$108
Mississippi16.8¢$110
Missouri14.0¢$92
Montana13.9¢$91
Nebraska13.3¢$87
Nevada14.3¢$94
New Hampshire27.2¢$179
New Jersey23.5¢$155
New Mexico15.2¢$100
New York29.4¢$194
North Carolina16.3¢$107
North Dakotacheapest12.3¢$81
Ohio19.5¢$128
Oklahoma13.3¢$88
Oregon15.8¢$104
Pennsylvania21.5¢$141
Rhode Island28.3¢$186
South Carolina17.1¢$112
South Dakota14.5¢$96
Tennessee14.9¢$98
Texas17.0¢$112
Utah13.3¢$87
Vermont24.6¢$162
Virginia17.4¢$114
Washington14.4¢$94
West Virginia16.1¢$106
Wisconsin19.2¢$126
Wyoming14.7¢$97

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 658 kWh/yr
ModelkWh/yr$/yr (US avg)
Bertazzoni REF36FDFZXNT658$124
GRANDEUR UFDMH226AS658$124
Ikea OVERSKADLIG658$124
Midea MRQ22D4AST658$124
Midea MRQ22D5AST658$124
Midea MRQ22D7AST658$124

Run your own numbers

Your rate, your numbers

Per day
34¢
Per month
$10.33
Per year
$124

658 kWh/yr × 18.8¢/kWh = $124/yr

Prefilled with this model's certified 658 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 KOSTCH KOS-36RF use?
ENERGY STAR certifies the KOSTCH KOS-36RF at 658 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 KOSTCH KOS-36RF cost to run per month?
About $10.33 a month at the U.S. average residential rate (18.8¢/kWh) — 34¢ a day, or $124 a year. Your state's rate moves this up or down; see the table above.
Is the KOSTCH KOS-36RF energy efficient?
It uses 17% more electricity than the median certified bottom-freezer refrigerator, which puts it among the least efficient certified models.
What does the KOSTCH KOS-36RF cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $81 a year in North Dakota (12.3¢/kWh) and $307 in Hawaii (46.6¢/kWh).
How many watts does the KOSTCH KOS-36RF draw on average?
Spread over a year of continuous operation, 658 kWh works out to an average draw of about 75 watts — like leaving a 75-watt bulb on 24/7.

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