KOOLMORE KM-RERFDSSIW-31
ENERGY STAR certified
Bottom-freezer refrigerator · 31.7 cu ft
Inthis refrigerator costs
about $11 a month
$129 a year
An estimate at your state's average rate — not a guarantee of your bill.
The yellow sticker says $100 a year.
You'll pay $29 more.
Sticker uses 14¢ per kWh. The U.S. average is 18.0¢ per kWh.
Energy use
714 kWh a year
vs similar bottom-freezer refrigerator
+27%
Cheaper refrigerators, same size
ENERGY STAR lists 2 other certified models at the same 714 kWh a year, size and type, so everything on this page applies to them too.
Cheaper to run, same size
- Samsung RF30BB6602Bottom-freezer refrigerator · 30.1 cu ft$98
- LG LF32S6000Bottom-freezer refrigerator · 31.7 cu ft$108
- LG LF29T6000Bottom-freezer refrigerator · 28.8 cu ft$115
- LG LRFCS29D6Bottom-freezer refrigerator · 28.8 cu ft$116
A year at the U.S. average residential rate.
Cost in every state
714 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¢ | $312 | about $26 a month |
| California | 33.1¢ | $237 | about $20 a month |
| Massachusetts | 30.4¢ | $217 | about $18 a month |
| Rhode Island | 29.4¢ | $210 | about $17 a month |
| Maine | 29.3¢ | $209 | about $17 a month |
| New York | 28.4¢ | $202 | about $17 a month |
| Connecticut | 28.2¢ | $201 | about $17 a month |
| Alaska | 27.0¢ | $193 | about $16 a month |
| New Hampshire | 26.8¢ | $191 | about $16 a month |
| District of Columbia | 24.2¢ | $173 | about $14 a month |
Show all 52 statesShow fewer
| Vermont | 23.9¢ | $171 | about $14 a month |
|---|---|---|---|
| New Jersey | 23.6¢ | $169 | about $14 a month |
| Maryland | 22.3¢ | $159 | about $13 a month |
| Michigan | 21.0¢ | $150 | about $12 a month |
| Pennsylvania | 20.8¢ | $148 | about $12 a month |
| Illinois | 19.0¢ | $136 | about $11 a month |
| Wisconsin | 18.8¢ | $134 | about $11 a month |
| Ohio | 18.3¢ | $131 | about $11 a month |
| U.S. average | 18.0¢ | $129 | about $11 a month |
| Delaware | 18.0¢ | $128 | about $11 a month |
| Indiana | 17.1¢ | $122 | about $10 a month |
| Virginia | 16.6¢ | $118 | about $10 a month |
| Colorado | 16.6¢ | $118 | about $10 a month |
| Alabama | 16.5¢ | $118 | about $10 a month |
| Minnesota | 16.2¢ | $116 | about $10 a month |
| Texas | 16.0¢ | $114 | about $10 a month |
| South Carolina | 15.7¢ | $112 | about $9 a month |
| West Virginia | 15.7¢ | $112 | about $9 a month |
| Oregon | 15.6¢ | $111 | about $9 a month |
| Arizona | 15.5¢ | $110 | about $9 a month |
| Florida | 15.4¢ | $110 | about $9 a month |
| New Mexico | 15.2¢ | $109 | about $9 a month |
| Kansas | 15.1¢ | $108 | about $9 a month |
| Georgia | 15.1¢ | $108 | about $9 a month |
| Mississippi | 14.9¢ | $107 | about $9 a month |
| North Carolina | 14.9¢ | $106 | about $9 a month |
| South Dakota | 14.3¢ | $102 | about $8 a month |
| Washington | 14.2¢ | $101 | about $8 a month |
| Wyoming | 14.2¢ | $101 | about $8 a month |
| Iowa | 14.1¢ | $101 | about $8 a month |
| Kentucky | 14.0¢ | $100 | about $8 a month |
| Montana | 13.9¢ | $99 | about $8 a month |
| Missouri | 13.9¢ | $99 | about $8 a month |
| Tennessee | 13.7¢ | $98 | about $8 a month |
| Oklahoma | 13.6¢ | $97 | about $8 a month |
| Nevada | 13.6¢ | $97 | about $8 a month |
| Arkansas | 13.5¢ | $96 | about $8 a month |
| Utah | 13.3¢ | $95 | about $8 a month |
| Louisiana | 13.1¢ | $93 | about $8 a month |
| Nebraska | 12.9¢ | $92 | about $8 a month |
| Idaho | 12.7¢ | $90 | about $8 a month |
| North Dakota | 12.5¢ | $89 | about $7 a month |
What the KOOLMORE KM-RERFDSSIW-31 costs where electricity is expensive
At Hawaii's average residential rate of 43.7¢ per kWh, the KOOLMORE KM-RERFDSSIW-31 costs $312 a year — $212 more a year than the label says. The EnergyGuide label estimates $100 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 $129 a year, and in North Dakota, the cheapest state, $89 a year.
| Where | Rate | Cost a year | vs the label |
|---|---|---|---|
| Hawaii | 43.7¢ per kWh | $312 | +$212 |
| California | 33.1¢ per kWh | $237 | +$137 |
| Massachusetts | 30.4¢ per kWh | $217 | +$117 |
| Rhode Island | 29.4¢ per kWh | $210 | +$110 |
| Maine | 29.3¢ per kWh | $209 | +$109 |
| North Dakota | 12.5¢ per kWh | $89 | −$10 |
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 $129 a year — about 27% more expensive to run than the average bottom-freezer refrigerator ($102 a year across 1,982 certified models).
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: 748 kWh a year ($135 a year). This model uses 714 kWh a year.
- Brand
- KOOLMORE
- Model number
- KM-RERFDSSIW-31
- Type
- Bottom-freezer refrigerator
- Capacity
- 31.7 cu ft
- Annual energy use
- 714 kWh a year
- Better than the federal standard
- 5% less energy
- ENERGY STAR Most Efficient
- No
- On the market since
- August 2026
- Certified
- August 2026
- UPC
- 810219782655
- Defrost
- Automatic
- Ice maker
- Yes
- Through-the-door dispenser
- No
- Counter depth
- No
- Built-in
- No
- Height (in)
- 69.9
- Width (in)
- 35.8
- Adjusted volume (cu ft)
- 39.2
- Connected features
- Yes
Where to buy
We do not sell appliances. These open a search on the retailer's own site.
Common questions
+How much does the KOOLMORE KM-RERFDSSIW-31 cost to run per month?
about $11 a month at the U.S. average residential rate of 18.0¢ per kWh, or $129 a year. Your cost depends on your state's rate — see the table above.
+How many kWh does the KOOLMORE KM-RERFDSSIW-31 use?
714 kWh a year, as the manufacturer filed it with the EPA, in the ENERGY STAR certified product database.
+Is the KOOLMORE KM-RERFDSSIW-31 energy efficient?
It is listed as ENERGY STAR certified. It uses about 27% more electricity than the average bottom-freezer refrigerator (average: 563 kWh a year).
+How does the KOOLMORE KM-RERFDSSIW-31 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 KOOLMORE KM-RERFDSSIW-31 uses 714 kWh a year, costing $129 a year.
How we calculate this
Annual energy use (714 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.