The 500 kWh figure is a chosen illustration, not a tested refrigerator or a typical household claim. Replace it with the annual consumption printed on your model's label. The useful question is whether the difference comes from the price of electricity, the energy used, or both.
Start with the energy figure
Find the annual kWh figure on the yellow label and record it alongside the estimated yearly dollar cost. Keep the model number with your notes. A similar-looking refrigerator is not necessarily the same model.
The FTC explains that EnergyGuide operating costs use typical operation and a national energy-price assumption. Your usage and local rate can differ. The label is a comparison tool, not a quote from your utility.
Use this formula to update the price assumption:
Estimated annual electricity cost = label kWh per year × your electricity rate in dollars per kWh.
Do not multiply annual kWh by hours or days again. Time is already included. Also avoid entering the annual kWh number into a watts field: watts describe power, while kWh describe energy accumulated over time.
Separate a price change from a consumption change
Consider an explicitly hypothetical label showing 500 kWh per year and an assumed rate of $0.12/kWh. Its calculated annual cost would be $60.00. These are example inputs, not numbers copied from a product label.
Keeping consumption at 500 kWh and substituting the June 2026 EIA benchmark gives:
500 × $0.1834 = $91.70 per year.
The difference is $31.70. Nothing in this calculation says the refrigerator has started using more energy. Only the price changed. If you treated the entire difference as evidence of a faulty appliance, you would be investigating the wrong quantity.
Now suppose a separate measurement suggested an annualized 600 kWh. This is another scenario assumption, not a field test. At the same benchmark rate, the result becomes $110.04. The additional 100 kWh contributes $18.34, separate from the price difference already identified.
This order makes the comparison easier to interpret: update the rate while holding consumption constant, then compare consumption while holding the rate constant.
A comparison table you can reuse
The following annual consumption values are chosen scenarios. They are not ratings for specific refrigerators. Costs use the EIA June 2026 US residential average of $0.1834/kWh, retrieved September 8, 2026.
| Assumed annual use | Annual electricity cost | Annual cost divided by 12 |
|---|---|---|
| 400 kWh | $73.36 | $6.11 |
| 500 kWh | $91.70 | $7.64 |
| 600 kWh | $110.04 | $9.17 |
| 700 kWh | $128.38 | $10.70 |
The last column is a budgeting average. It does not predict a particular month's consumption. Keep annual and monthly comparisons on the same time basis, and round money only after completing the calculation.
Check whether the consumption comparison is fair
Before interpreting a meter reading, write down its start and end times. A cumulative reading without its duration cannot tell you daily use. Record the refrigerator's normal setting and whether anything unusual happened during the observation.
For example, an assumed 10 kWh over seven complete days works out to 10 ÷ 7 = about 1.43 kWh per day. Extending that exact average across a chosen 365-day year gives about 521.43 kWh. Multiplying the unrounded result by $0.1834 gives $95.63. This is an extrapolation from a hypothetical week, not a prediction that every week will match it.
A reading taken during an unusual period deserves a note. Comparing a short observation with an annual label is useful for forming questions, but it is not enough by itself to diagnose a fault. Repeat observations under ordinary conditions before drawing a strong conclusion.
If you use a plug-in monitor, check that its manufacturer permits the appliance and electrical load. Do not improvise adapters or open electrical equipment to obtain a reading. Ask a licensed electrician where an electrical connection needs assessment.
Inspect ordinary operating conditions
ENERGY STAR's refrigerator guidance recommends keeping the appliance away from heat sources, allowing air circulation and checking door seals. Compare the installation with your refrigerator's own manual before changing anything.
Keep your investigation specific. A door that does not close properly is an observation you can report. A claim that your fridge must be using a fixed percentage more because it is older requires evidence you may not have. This guide assigns no universal energy penalty to age, warm rooms or door openings.
If food is not staying properly chilled or the appliance behaves abnormally, contact the manufacturer or a qualified appliance technician. A running-cost estimate cannot establish safe operation.
Put the comparison into the calculator
Use the appliance running-cost calculator when you have watts and an operating schedule. For a measured average, convert cumulative kWh to average watts by multiplying by 1,000 and dividing by elapsed hours. Enter the full daily period and leave duty cycle at 100%, because the average already includes cycling.
For label-only comparisons, the annual-kWh formula above is simpler. The calculator's monthly total times twelve assumes repeated monthly inputs; it is not a substitute for the label's annual basis.
The estimate excludes fixed account charges, demand charges and a detailed time-of-use breakdown. The EIA rate is a dated benchmark, not your tariff. Use the electricity-rate guide to choose your bill input, the measurement guide to interpret readings, and the EnergyGuide guide when comparing labels while shopping.