A mini fridge looks cheap on the shelf, but it runs around the clock, so the electricity bill is the real long-term cost. This guide uses the EIA national average electricity price and the annual kWh figures printed on EnergyGuide labels, not hands-on testing, to show what one costs to run in a U.S. home.
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Quick Answer: Mini Fridge Running Cost
- Expect roughly $18 to $45 a year in electricity for a typical compressor-based mini fridge, depending on how many kWh it uses.
- Annual cost = kWh per year on the EnergyGuide label × 18.16¢, the EIA August 2026 residential average.
- Garage or hot-room placement, poor ventilation and a worn door seal push the figure up.
- Compressor models are generally more efficient than thermoelectric ones, so choose compressor cooling for everyday storage.
📊 The number that matters
At 18.16¢ per kWh, every 100 kWh a mini fridge uses in a year costs about $18.16. The kWh number on the EnergyGuide label is the one to compare.
What a Mini Fridge Costs to Run Each Year
The chart converts three round annual-use figures into dollars at the EIA August 2026 national average. They are illustrative inputs, not measurements of any model, so replace them with the figure on the label of the unit you are considering.
Annual electricity cost at 18.16¢/kWh (EIA, August 2026). kWh figures are illustrative.
How to Work Out Your Own Cost
Look for the yellow EnergyGuide label, which lists estimated yearly kWh and yearly cost. If there is no label, use the formula: watts × hours running per day × 365 ÷ 1,000 = kWh a year.
For example, a compressor running at 70 watts for 10 hours a day uses 70 × 10 × 365 ÷ 1,000 = 255.5 kWh a year, or about $46.40 at 18.16¢. A plug-in power meter will show your real consumption over a few days.
What Pushes the Cost Up
Heat is the main factor. A unit in a warm garage or a closed cabinet has to run longer to hold temperature, and a worn door gasket lets warm air in. Keep a few inches of clearance around the vent, and keep the unit reasonably full without blocking airflow.
Thermoelectric (Peltier) mini coolers are generally less efficient than compressor units, so they suit occasional cooling better than all-day storage.
Is a Mini Fridge Worth the Running Cost?
If it keeps drinks, medication or leftovers handy in a home office or guest room and spares you opening the main fridge, a cost in the range above is modest. If it only duplicates your kitchen fridge, the electricity is a recurring cost for convenience. If a unit is old and has no label, assume it uses more than a new one.
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For more detail, see our guides to mini fridge electricity costs per month and appliance wattages and running costs.
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FAQ
How much does a mini fridge cost to run per month?
Divide the yearly figure by 12. Using the illustrative range above, roughly $1.50 to $3.80 a month at 18.16¢ per kWh.
Do mini fridges use a lot of electricity?
Most use far less than a full-size refrigerator, but they use more per cubic foot of storage, so the cost per item stored is higher.
Sources: U.S. Energy Information Administration, Electric Power Monthly (August 2026 residential average, 18.16¢/kWh). EnergyGuide label program (FTC). As an Amazon Associate we earn from qualifying purchases.