WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

MicroFridge 3.1MF7RS

Running around the clock, the MicroFridge 3.1MF7RS uses a certified 195 kWh per year — about $37 at the U.S. average rate, or $3.06 a month, the equivalent of a steady 22-watt draw. That puts it in the most efficient tenth of every certified compact refrigerator — 21% less electricity than the median, ranked 63 of 1589. Where you live moves the bill from $24 a year in North Dakota to $91 in Hawaii. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

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

$37/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$3.06
Per day
10¢
Certified use
195 kWh/yr
Configuration
Compact Refrigerator
Total capacity
3.1 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the MicroFridge 3.1MF7RS (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

MicroFridge 3.1MF7RS: 195 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$34
Alaska27.4¢$53
Arizona15.5¢$30
Arkansas14.2¢$28
California35.3¢$69
Colorado16.5¢$32
Connecticut32.2¢$63
Delaware18.8¢$37
District of Columbia25.4¢$50
Florida15.4¢$30
Georgia15.4¢$30
Hawaiipriciest46.6¢$91
Idaho12.7¢$25
Illinois20.5¢$40
Indiana17.9¢$35
Iowa13.9¢$27
Kansas15.8¢$31
Kentucky15.0¢$29
Louisiana14.4¢$28
Maine28.4¢$55
Maryland22.1¢$43
Massachusetts29.4¢$57
Michigan21.4¢$42
Minnesota16.4¢$32
Mississippi16.8¢$33
Missouri14.0¢$27
Montana13.9¢$27
Nebraska13.3¢$26
Nevada14.3¢$28
New Hampshire27.2¢$53
New Jersey23.5¢$46
New Mexico15.2¢$30
New York29.4¢$57
North Carolina16.3¢$32
North Dakotacheapest12.3¢$24
Ohio19.5¢$38
Oklahoma13.3¢$26
Oregon15.8¢$31
Pennsylvania21.5¢$42
Rhode Island28.3¢$55
South Carolina17.1¢$33
South Dakota14.5¢$28
Tennessee14.9¢$29
Texas17.0¢$33
Utah13.3¢$26
Vermont24.6¢$48
Virginia17.4¢$34
Washington14.4¢$28
West Virginia16.1¢$31
Wisconsin19.2¢$37
Wyoming14.7¢$29

Certified models closest in efficiency

compact refrigerators within reach of 195 kWh/yr
ModelkWh/yr$/yr (US avg)
Danby DAG022A5BDHmost efficient195$37
Danby One Plug 3.1SM6Rmost efficient195$37
MicroFridge 3.1MF7Rmost efficient195$37
MicroFridge 3.1MF7RWmost efficient195$37
FRIGIAIRE EFR331197$37
Frigidaire EFR323197$37

Run your own numbers

Your rate, your numbers

Per day
10¢
Per month
$3.06
Per year
$37

195 kWh/yr × 18.8¢/kWh = $37/yr

Prefilled with this model's certified 195 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 MicroFridge 3.1MF7RS use?
ENERGY STAR certifies the MicroFridge 3.1MF7RS at 195 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 MicroFridge 3.1MF7RS cost to run per month?
About $3.06 a month at the U.S. average residential rate (18.8¢/kWh) — 10¢ a day, or $37 a year. Your state's rate moves this up or down; see the table above.
Is the MicroFridge 3.1MF7RS energy efficient?
It uses 21% less electricity than the median certified compact refrigerator, placing it in the top 10% of certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the MicroFridge 3.1MF7RS cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $24 a year in North Dakota (12.3¢/kWh) and $91 in Hawaii (46.6¢/kWh).
How many watts does the MicroFridge 3.1MF7RS draw on average?
Spread over a year of continuous operation, 195 kWh works out to an average draw of about 22 watts — like leaving a 22-watt bulb on 24/7.

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