How to calculate the power consumption of your refrigerator

Refrigerators are indispensable for modern food storage, and in times of high electricity prices, the demand for energy-efficient appliances is increasing. Anyone who thinks about a new purchase, even though the old refrigerator still works well, simply wants to save energy. Whether the purchase of a new device really pays off, you will learn when you calculate the power consumption of the old refrigerator and check when the modern refrigerator amortized.

How to calculate the power consumption of your refrigerator

The approximate calculation of power consumption is relatively simple, you just have to take an hour to do so, and as an important clue you need the power of your refrigerator.

You will likely find this value on the nameplate of the unit, in watts. If the number is not noted on the sign, look for power consumption on the Internet or check with the device manufacturer.

Now stop how many minutes per hour your refrigerator compressor is active. Be sure to follow the clearly audible sound that indicates when the compressor is running. Then the calculation begins.

Calculate the power consumption and the energy costs for the refrigerator

  • Take the stopped minutes 24 times to see how long the compressor is running per day.
  • Multiply the result by 365 to see how long the compressor is running each year.
  • Convert it back into hours (divided by 60) and multiply the number of hours by the power consumption (for example, 140 watts).
  • If you now divide this result by 1,000, you have calculated the electricity consumption in kWh.

Finally, you can multiply the cost per kWh with the result, currently they are between 26 and 30 cents: Now you know approximately how much money you have to pay for your refrigerator per year.

An overview for orientation

For orientation, we provide a small overview of realistic power consumption, hourly running times and resulting annual energy costs at a price of 27 cents per kWh:

inputRunning time in minutes per hourannual electricity costs
1001039.42 euros
1501059.13 euros
1001247.30 euros
1501263.07 euros

Tips & Tricks

By technical means, you can determine the power consumption with an electricity meter that is switched between the socket and the refrigerator. In some cities you can borrow such a device from the Citizen's Office or even from the City Library.

Video Board: Refrigerator Power Consumption: How many watts does a fridge use?