What changes the cost of a refrigerator?
The quick answer is power multiplied by time and your electricity rate—but the right input depends on the appliance. Wattwise starts this calculator with a representative estimate, not a manufacturer-specific claim. Replace defaults with measured, label, or bill values wherever possible.
- Official annual kWh label
- Capacity, door type and freezer layout
- Ambient temperature and ventilation
- Age, door seals and frost buildup
- Number of refrigerators
Use the annual kWh figure when you have one
A refrigerator compressor turns on and off. Its nameplate input is the draw during a particular operating state, not a 24-hour average. An official energy label's annual kWh is a better comparison starting point for a complete refrigerator. Select the annual-energy method if your label provides it.
A label showing 300 kWh per year
An illustrative 300 kWh/year becomes 25 kWh per normalized month after dividing by 12. Multiply 300 by your own tariff's price per kWh for the annual energy charge. Do not multiply the compressor's input watts by all 8,760 hours in a year.
Kitchen temperature, door opening, settings and appliance age change real use. The label is a standardized comparison; a meter over several ordinary days gives a more personal estimate.
Label reference: US Federal Trade Commission: using the EnergyGuide label
Example refrigerator running costs
These examples use the selected market’s clearly labeled planning estimate and the typical schedule shown in the calculator. Electricity tariffs vary by provider, tier, time, tax, and subsidy, so replace the rate with the value on your bill.
| Example | Energy input | Indicative cost |
|---|---|---|
| Efficient single door | 170 kWh/year | $2.83 / month |
| Typical double door | 270 kWh/year | $4.50 / month |
| Older large unit | 520 kWh/year | $8.67 / month |
Ways to reduce this appliance’s electricity cost
Savings depend on comfort, safety, usage, and the equipment you already own. Model a change before buying a replacement, and verify high-cost appliances with a meter or label value.
- Use the annual kWh label when available instead of rated watts.
- Leave ventilation space around the condenser.
- Measure an older second fridge before deciding to keep it.
How Wattwise calculated this estimate
For the default inputs, Wattwise estimates $4.50 per month and 22.5 kWh at the global reference rate. The active formula is: official or entered annual kWh × quantity.
The displayed range widens when power, duty cycle, weather, or tariff data are estimates. It narrows when you provide measured energy, an official annual kWh value, or a per-cycle energy label. Fixed charges are not allocated to one appliance unless you explicitly create a household bill allocation.
Review formulas, rounding, and confidence