Refrigerator Running Cost Calculator
Estimate daily, monthly, and annual refrigerator or freezer electricity costs using EnergyGuide annual kWh, measured daily kWh, or nameplate wattage and duty cycle.
Refrigerator Energy Consumption
480.0 kWh/year (1.32 kWh/day)
Refrigerator Operating Cost Formula
Annual Cost = Annual kWh × Rate ($/kWh); Daily Cost = Annual Cost ÷ 365- EnergyGuide Label Mode (Recommended): Uses the standardized annual kWh rating printed on the yellow FTC EnergyGuide sticker.
- Measured Daily kWh Mode: Uses actual kWh/day recorded by a plug-in watt/energy monitor.
- Wattage & Duty Cycle Mode: Daily kWh = (Rated Watts ÷ 1,000) × 24 hours × (Compressor Duty Cycle % ÷ 100).
Step-by-Step Worked Example
Calculation Steps:
- Daily Energy Consumption = 480 kWh ÷ 365 days = 1.315 kWh/day
- Annual Operating Cost = 480 kWh × $0.168 = $80.64/year
- Monthly Average Cost = $80.64 ÷ 12 = $6.72/month ($0.22/day)
How to Use This Calculator
- 1Select your preferred input mode: EnergyGuide Annual kWh, Measured Daily kWh, or Nameplate Wattage & Duty Cycle.
- 2Enter your refrigerator energy figure and your local electricity rate per kWh.
- 3Optionally adjust the custom usage period (e.g., 30 days or 90 days) to see period-specific costs.
Assumptions & Limitations
- Prefers measured or EnergyGuide kWh because refrigerator compressors cycle on and off rather than running at nameplate wattage 24/7.
- In Wattage mode, a typical domestic refrigerator compressor runs 30% to 40% of the day (duty cycle).
Frequently Asked Questions
Why shouldn’t I multiply my refrigerator nameplate watts by 24 hours?
The nameplate wattage (often 150W–400W) reflects peak power when the compressor and defrost heater are active. Because an insulated fridge cycles its compressor on only ~35% of the time, multiplying peak watts by 24 hours overestimates cost by nearly 3x.
How much does an older second refrigerator in a garage cost to run?
Refrigerators manufactured before 2001—especially when placed in hot garages—often consume 900 to 1,400 kWh/year ($150–$235/year at US average rates).
Where can I find my refrigerator’s annual kWh rating?
Look up your model number on the yellow FTC EnergyGuide label or the official ENERGY STAR product database.
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