A refrigerator is connected all day, but its compressor does not necessarily draw its rated power continuously. The thermostat cycles the cooling system, and actual energy depends on the model, room temperature, door openings, settings, ventilation, age, and condition. Start with annual energy information or a measurement rather than multiplying peak watts by 24 hours.
Use annual energy data when available
Some product labels and technical documents provide annual energy in kWh/year. Divide that figure by 365 for a simple daily average. A standardized test may not match your kitchen conditions, but it can be a better comparison point than maximum input watts.
Do not assume constant use
The compressor and fans cycle to maintain temperature. Multiplying nameplate watts by 24 hours assumes continuous operation and may overstate consumption. The rating remains useful for electrical planning, but it is not automatically the daily energy total.
Measure a representative period
A compatible plug-in energy meter can measure several days or a week if its electrical rating is suitable. Keep normal door use and temperature settings. Do not interrupt the supply or use an unsuitable adapter. For a built-in appliance or fixed circuit that cannot safely be measured at the plug, consult a qualified electrician.
What changes consumption?
- High room temperature and poor ventilation around the unit.
- Frequent door openings or warm food.
- Damaged seals, blocked airflow, frost, or neglected maintenance.
- Different size, technology, age, and test conditions.
Turn kWh into cost
Multiply daily or annual kWh by your actual unit price for an energy-charge estimate. Keep fixed fees, taxes, and time-of-use prices separate unless explicitly modeled. Try the Electricity Cost Calculator or compare other loads in the Home Energy Planner.
Reference
For appliance energy-label context, consult the U.S. Department of Energy information on estimating appliance and home electronic energy use. Label formats and test methods differ by country.
Related tools and guides
Explore the complete calculator library or browse all home energy guides. Each calculator shows its assumptions and limits.