Samsung RF31CG7400

Covers every color and finish of this model.

ENERGY STAR certified

Bottom-freezer refrigerator · 29.8 cu ft

InYour statethis refrigerator costs

about $12 a month

$140 a year

An estimate at your state's average rate — not a guarantee of your bill.

Estimated yearly cost

$108

a year

The yellow sticker says $108 a year.

You'll pay $31 more.

Sticker uses 14¢ per kWh. The U.S. average is 18.0¢ per kWh.

Energy use

774 kWh a year

vs similar bottom-freezer refrigerator

+38%

Cheaper refrigerators, same size

Cheaper to run, same size

A year at the U.S. average residential rate.

Compare all 550 refrigerators over 25 cu ft

Cost in every state

774 kWh a year × each state's average residential rate (EIA 12-month average through July 2026).

State	Rate	Per year	Per month
Hawaii	43.7¢	$338	about $28 a month
California	33.1¢	$256	about $21 a month
Massachusetts	30.4¢	$235	about $20 a month
Rhode Island	29.4¢	$227	about $19 a month
Maine	29.3¢	$227	about $19 a month
New York	28.4¢	$220	about $18 a month
Connecticut	28.2¢	$218	about $18 a month
Alaska	27.0¢	$209	about $17 a month
New Hampshire	26.8¢	$207	about $17 a month
District of Columbia	24.2¢	$187	about $16 a month

Show all 52 states

Vermont	23.9¢	$185	about $15 a month
New Jersey	23.6¢	$183	about $15 a month
Maryland	22.3¢	$173	about $14 a month
Michigan	21.0¢	$163	about $14 a month
Pennsylvania	20.8¢	$161	about $13 a month
Illinois	19.0¢	$147	about $12 a month
Wisconsin	18.8¢	$145	about $12 a month
Ohio	18.3¢	$142	about $12 a month
U.S. average	18.0¢	$140	about $12 a month
Delaware	18.0¢	$139	about $12 a month
Indiana	17.1¢	$132	about $11 a month
Virginia	16.6¢	$128	about $11 a month
Colorado	16.6¢	$128	about $11 a month
Alabama	16.5¢	$128	about $11 a month
Minnesota	16.2¢	$126	about $10 a month
Texas	16.0¢	$124	about $10 a month
South Carolina	15.7¢	$122	about $10 a month
West Virginia	15.7¢	$121	about $10 a month
Oregon	15.6¢	$121	about $10 a month
Arizona	15.5¢	$120	about $10 a month
Florida	15.4¢	$119	about $10 a month
New Mexico	15.2¢	$118	about $10 a month
Kansas	15.1¢	$117	about $10 a month
Georgia	15.1¢	$117	about $10 a month
Mississippi	14.9¢	$116	about $10 a month
North Carolina	14.9¢	$115	about $10 a month
South Dakota	14.3¢	$110	about $9 a month
Washington	14.2¢	$110	about $9 a month
Wyoming	14.2¢	$110	about $9 a month
Iowa	14.1¢	$109	about $9 a month
Kentucky	14.0¢	$108	about $9 a month
Montana	13.9¢	$108	about $9 a month
Missouri	13.9¢	$108	about $9 a month
Tennessee	13.7¢	$106	about $9 a month
Oklahoma	13.6¢	$105	about $9 a month
Nevada	13.6¢	$105	about $9 a month
Arkansas	13.5¢	$104	about $9 a month
Utah	13.3¢	$103	about $9 a month
Louisiana	13.1¢	$101	about $8 a month
Nebraska	12.9¢	$100	about $8 a month
Idaho	12.7¢	$98	about $8 a month
North Dakota	12.5¢	$97	about $8 a month

What the Samsung RF31CG7400 costs where electricity is expensive

At Hawaii's average residential rate of 43.7¢ per kWh, the Samsung RF31CG7400 costs $338 a year — $230 more a year than the label says. The EnergyGuide label estimates $108 a year, because every label in the country is calculated at 14¢ per kWh. At the U.S. average of 18.0¢ per kWh this refrigerator costs $140 a year, and in North Dakota, the cheapest state, $97 a year.

Estimated annual running cost for the Samsung RF31CG7400 in the highest-rate states and the lowest-rate state
Where	Rate	Cost a year	vs the label
Hawaii	43.7¢ per kWh	$338	+$230
California	33.1¢ per kWh	$256	+$148
Massachusetts	30.4¢ per kWh	$235	+$127
Rhode Island	29.4¢ per kWh	$227	+$119
Maine	29.3¢ per kWh	$227	+$118
North Dakota	12.5¢ per kWh	$97	−$11

Electricity prices: EIA 12-month average through July 2026, residential sector, average revenue per kWh. Label figure calculated at 14¢ per kWh, the rate the FTC requires on labels.

Full specs

At the U.S. average residential rate this one costs $140 a year — about 38% more expensive to run than the average bottom-freezer refrigerator ($102 a year across 1,982 certified models).

$140

Most efficient $36Average $102Least efficient $144

Every model on this scale is ENERGY STAR certified. Range across 1982 bottom-freezer refrigerators, priced a year at the U.S. average residential rate.

Federal limit for this size and configuration: 811 kWh a year ($146 a year). This model uses 774 kWh a year.

Brand: Samsung
Model number: RF31CG7400**as ENERGY STAR lists it; * and # stand for color and finish codes
Type: Bottom-freezer refrigerator
Capacity: 29.8 cu ft
Annual energy use: 774 kWh a year
Better than the federal standard: 5% less energy
ENERGY STAR Most Efficient: No
On the market since: July 2023
Certified: May 2023
UPC: 887276769271
Defrost: Automatic
Ice maker: Yes
Through-the-door dispenser: Yes
Counter depth: No
Built-in: No
Height (in): 70
Width (in): 35.8
Adjusted volume (cu ft): 36.3
Refrigerant: R-600a
Connected features: Yes

Where to buy

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Common questions

+How much does the Samsung RF31CG7400 cost to run per month?

about $12 a month at the U.S. average residential rate of 18.0¢ per kWh, or $140 a year. Your cost depends on your state's rate — see the table above.

+How many kWh does the Samsung RF31CG7400 use?

774 kWh a year, as the manufacturer filed it with the EPA, in the ENERGY STAR certified product database.

+Is the Samsung RF31CG7400 energy efficient?

It is listed as ENERGY STAR certified. It uses about 38% more electricity than the average bottom-freezer refrigerator (average: 563 kWh a year).

+How does the Samsung RF31CG7400 compare to the average refrigerator?

The average bottom-freezer refrigerator in our database uses 563 kWh a year, costing $102 a year at the U.S. average residential rate. The Samsung RF31CG7400 uses 774 kWh a year, costing $140 a year.

How we calculate this

Annual energy use (774 kWh a year) is the figure the manufacturer filed for this model with the EPA, in the ENERGY STAR certified product database. Running cost is that figure multiplied by a state's average residential electricity price from the U.S. Energy Information Administration (12-month average through July 2026, average revenue per kWh).

Sources: EPA ENERGY STAR certified product data, updated weekly · U.S. EIA electricity prices, 12-month average through July 2026.