Kitchen appliances
How to Estimate Fridge Electricity Cost per Month
Estimate fridge electricity costs from annual label kWh or measured daily energy. Avoid multiplying the rated watts by every hour of the month.
Use measured daily kWh × days × your electricity rate. An annual label can provide a standardized average, but actual use changes with conditions and settings.
On this page
A refrigerator's monthly electricity cost cannot be read from its wattage alone. It stays plugged in, but its compressor and other components do not necessarily draw full power continuously.
There are two useful starting points: annual energy from its label, or energy measured during normal use. Keep those methods separate when comparing results.
Use an annual label for a first estimate
Find the exact model's annual kWh figure. The FTC explains EnergyGuide estimates: they follow typical-use and price assumptions, rather than your household's exact conditions.
Suppose a hypothetical label lists 438 kWh per year. Its standardized daily average is 438 ÷ 365 = 1.2 kWh. At an example $0.20/kWh, a 30-day period would cost 1.2 × 30 × 0.20 = $7.20.
An evenly divided annual monthly average would instead be 438 × 0.20 ÷ 12 = $7.30. The difference comes from dividing by 30 days versus one-twelfth of a year. State which period you mean.
Measure ordinary use for a closer check
If the fridge and a monitor are safely compatible, record cumulative kWh over several normal days. Follow the monitor's limits and the appliance's instructions. The P3 manual explains cumulative energy and elapsed time for its device.
Do not choose only the first hour after a large food load or a power outage. That period may include unusual cooling work. Record room conditions and ordinary door use with the result.
If a hypothetical measurement records 9.1 kWh over seven days, daily use is 1.3 kWh. At the example price above, 30 comparable days cost $7.80. A short sample still cannot predict every season.
Check practical causes of extra use
ENERGY STAR refrigerator guidance recommends checking door seals, limiting door openings, and allowing the required airflow. Follow the manual for accessible coil care and clearances.
Look for a blocked door, a damaged seal, or an appliance close to a heat source. Do not move a heavy refrigerator unsafely or open covers to perform this check.
These observations identify things to investigate. They do not prove how many kWh a repair or cleaning step will save. Measure before and after under comparable conditions if you want that evidence.
Protect food temperatures
Do not raise the temperature simply to reduce electricity. The FDA advises keeping refrigerated food at 40°F or below and a freezer at 0°F. Use an appliance thermometer to check actual temperatures.
If cooling is unsafe, deal with the food and appliance fault first. A low energy bill is not evidence that food remains safely cold.
Keep a comparison record
- Record the model and the energy-data source.
- Write down the measurement dates and room conditions.
- Use the same rate and period for each comparison.
- Separate label estimates from household measurements.
- Investigate large unexplained changes with appropriate professional help.
Use measured daily mode in the electricity calculator. A clear method makes the estimate more useful than a single unexplained monthly dollar figure.
Sources
Source pages checked during research on 7 October 2026. Examples are Handy Daily calculations unless stated otherwise.