LG LF21C6000

Covers every color and finish of this model.

ENERGY STAR certified

Bottom-freezer refrigerator · 20.8 cu ft

InYour statethis refrigerator costs

about $8 a month

$93 a year

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

Estimated yearly cost

$72

a year

The yellow sticker says $72 a year.

You'll pay $21 more.

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

Energy use

515 kWh a year

vs similar bottom-freezer refrigerator

-8%

Cheaper refrigerators, same size

Cheaper to run, same size

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

Compare all 1133 refrigerators 20–25 cu ft

Cost in every state

515 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¢	$225	about $19 a month
California	33.1¢	$171	about $14 a month
Massachusetts	30.4¢	$157	about $13 a month
Rhode Island	29.4¢	$151	about $13 a month
Maine	29.3¢	$151	about $13 a month
New York	28.4¢	$146	about $12 a month
Connecticut	28.2¢	$145	about $12 a month
Alaska	27.0¢	$139	about $12 a month
New Hampshire	26.8¢	$138	about $11 a month
District of Columbia	24.2¢	$125	about $10 a month

Show all 52 states

Vermont	23.9¢	$123	about $10 a month
New Jersey	23.6¢	$122	about $10 a month
Maryland	22.3¢	$115	about $10 a month
Michigan	21.0¢	$108	about $9 a month
Pennsylvania	20.8¢	$107	about $9 a month
Illinois	19.0¢	$98	about $8 a month
Wisconsin	18.8¢	$97	about $8 a month
Ohio	18.3¢	$94	about $8 a month
U.S. average	18.0¢	$93	about $8 a month
Delaware	18.0¢	$92	about $8 a month
Indiana	17.1¢	$88	about $7 a month
Virginia	16.6¢	$85	about $7 a month
Colorado	16.6¢	$85	about $7 a month
Alabama	16.5¢	$85	about $7 a month
Minnesota	16.2¢	$84	about $7 a month
Texas	16.0¢	$82	about $7 a month
South Carolina	15.7¢	$81	about $7 a month
West Virginia	15.7¢	$81	about $7 a month
Oregon	15.6¢	$80	about $7 a month
Arizona	15.5¢	$80	about $7 a month
Florida	15.4¢	$79	about $7 a month
New Mexico	15.2¢	$78	about $7 a month
Kansas	15.1¢	$78	about $6 a month
Georgia	15.1¢	$78	about $6 a month
Mississippi	14.9¢	$77	about $6 a month
North Carolina	14.9¢	$77	about $6 a month
South Dakota	14.3¢	$73	about $6 a month
Washington	14.2¢	$73	about $6 a month
Wyoming	14.2¢	$73	about $6 a month
Iowa	14.1¢	$73	about $6 a month
Kentucky	14.0¢	$72	about $6 a month
Montana	13.9¢	$72	about $6 a month
Missouri	13.9¢	$72	about $6 a month
Tennessee	13.7¢	$70	about $6 a month
Oklahoma	13.6¢	$70	about $6 a month
Nevada	13.6¢	$70	about $6 a month
Arkansas	13.5¢	$69	about $6 a month
Utah	13.3¢	$69	about $6 a month
Louisiana	13.1¢	$67	about $6 a month
Nebraska	12.9¢	$66	about $6 a month
Idaho	12.7¢	$65	about $5 a month
North Dakota	12.5¢	$65	about $5 a month

What the LG LF21C6000 costs where electricity is expensive

At Hawaii's average residential rate of 43.7¢ per kWh, the LG LF21C6000 costs $225 a year — $153 more a year than the label says. The EnergyGuide label estimates $72 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 $93 a year, and in North Dakota, the cheapest state, $65 a year.

Estimated annual running cost for the LG LF21C6000 in the highest-rate states and the lowest-rate state
Where	Rate	Cost a year	vs the label
Hawaii	43.7¢ per kWh	$225	+$153
California	33.1¢ per kWh	$171	+$99
Massachusetts	30.4¢ per kWh	$157	+$84
Rhode Island	29.4¢ per kWh	$151	+$79
Maine	29.3¢ per kWh	$151	+$79
North Dakota	12.5¢ per kWh	$65	−$8

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 $93 a year — about 8% cheaper to run than the average bottom-freezer refrigerator ($102 a year across 1,982 certified models).

$93

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: 545 kWh a year ($98 a year). This model uses 515 kWh a year.

Brand: LG
Model number: LF21C6000*as ENERGY STAR lists it; * and # stand for color and finish codes
Type: Bottom-freezer refrigerator
Capacity: 20.8 cu ft
Annual energy use: 515 kWh a year
Better than the federal standard: 6% less energy
ENERGY STAR Most Efficient: No
On the market since: December 2024
Certified: November 2024
UPC: 195174109502
Defrost: Automatic
Ice maker: No
Through-the-door dispenser: No
Counter depth: Yes
Built-in: No
Height (in): 69.9
Width (in): 32.9
Adjusted volume (cu ft): 25.8
Refrigerant: R-600a
Connected features: Yes

Where to buy

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Common questions

+How much does the LG LF21C6000 cost to run per month?

about $8 a month at the U.S. average residential rate of 18.0¢ per kWh, or $93 a year. Your cost depends on your state's rate — see the table above.

+How many kWh does the LG LF21C6000 use?

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

+Is the LG LF21C6000 energy efficient?

It is listed as ENERGY STAR certified. It uses about 8% less electricity than the average bottom-freezer refrigerator (average: 563 kWh a year).

+How does the LG LF21C6000 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 LG LF21C6000 uses 515 kWh a year, costing $93 a year.

How we calculate this

Annual energy use (515 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.