WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

THOR KITCHEN RF3621CTDW

The THOR KITCHEN RF3621CTDW never switches off, and its certified 539 kWh a year works out to about $99 on a U.S.-average electric bill — roughly $8.24 a month for an average continuous draw of 62 watts. Efficiency-wise it's unremarkable in a good way: within 4% of the median certified bottom-freezer refrigerator (rank 580 of 1478). The same unit costs $71 a year in Nevada but $284 in Hawaii — electricity rates, not the appliance, make the difference.

Uses 15% less energy than the U.S. federal minimum

Dimensions 70.1" H × 35.9" W

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

$99/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$8.24
Per day
27¢
Certified use
539 kWh/yr
Configuration
Bottom Freezer
Total capacity
20.3 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
No
42 kWh805 kWh
Where the THOR KITCHEN RF3621CTDW (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

THOR KITCHEN RF3621CTDW: 539 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$88
Alaska28.2¢$152
Arizona15.2¢$82
Arkansas14.1¢$76
California34.7¢$187
Colorado17.1¢$92
Connecticut24.3¢$131
Delaware19.3¢$104
District of Columbia24.4¢$131
Florida15.1¢$81
Georgia16.4¢$88
Hawaiipriciest52.7¢$284
Idaho14.4¢$77
Illinois19.9¢$107
Indiana17.5¢$94
Iowa15.9¢$86
Kansas15.7¢$85
Kentucky14.3¢$77
Louisiana13.5¢$73
Maine29.6¢$159
Maryland21.8¢$118
Massachusetts29.6¢$160
Michigan23.0¢$124
Minnesota17.5¢$94
Mississippi14.9¢$80
Missouri16.2¢$87
Montana15.1¢$82
Nebraska13.3¢$71
Nevadacheapest13.1¢$71
New Hampshire27.0¢$146
New Jersey24.9¢$134
New Mexico15.1¢$81
New York29.5¢$159
North Carolina14.7¢$79
North Dakota14.1¢$76
Ohio19.2¢$103
Oklahoma14.3¢$77
Oregon16.3¢$88
Pennsylvania21.7¢$117
Rhode Island29.2¢$158
South Carolina15.6¢$84
South Dakota15.4¢$83
Tennessee14.1¢$76
Texas15.9¢$86
Utah13.4¢$72
Vermont24.4¢$132
Virginia17.2¢$93
Washington14.9¢$80
West Virginia15.4¢$83
Wisconsin19.6¢$105
Wyoming15.2¢$82

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 539 kWh/yr
ModelkWh/yr$/yr (US avg)
Continental CE-FRF172539$99
FORZA FF36FBMS539$99
FULGOR MILANO FM4FBM36SS539$99
Kenmore 897.7551#32539$99
Kenmore 897.75515320539$99
Kenmore KKFDR36x20.3HI-SS539$99

Run your own numbers

Your rate, your numbers

Per day
27¢
Per month
$8.24
Per year
$99

539 kWh/yr × 18.3¢/kWh = $99/yr

Prefilled with this model's certified 539 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 THOR KITCHEN RF3621CTDW use?
ENERGY STAR certifies the THOR KITCHEN RF3621CTDW at 539 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 THOR KITCHEN RF3621CTDW cost to run per month?
About $8.24 a month at the U.S. average residential rate (18.3¢/kWh) — 27¢ a day, or $99 a year. Your state's rate moves this up or down; see the table above.
Is the THOR KITCHEN RF3621CTDW energy efficient?
It uses 4% less electricity than the median certified bottom-freezer refrigerator.
What does the THOR KITCHEN RF3621CTDW cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $71 a year in Nevada (13.1¢/kWh) and $284 in Hawaii (52.7¢/kWh).
How many watts does the THOR KITCHEN RF3621CTDW draw on average?
Spread over a year of continuous operation, 539 kWh works out to an average draw of about 62 watts — like leaving a 62-watt bulb on 24/7.

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