How Much Electricity Does a Freezer Use Per Day?

The average electricity consumption of a freezer per day is between 0.8 and 1.2 kWh, depending on the size, type, and efficiency of the model. This translates to an annual cost of $35 to $53, based on the national average electricity price of $0.12 per kWh. However, this is only an estimate, and the actual electricity usage of your freezer may vary depending on several factors, such as how often you open and close the door, how full you keep it, and where you place it in your home. In this article, we will explain how to measure the electricity usage of your freezer, how to choose an energy-efficient freezer, and how to reduce the energy consumption of your existing freezer.

How to Measure the Electricity Usage of Your Freezer

The easiest way to measure the electricity usage of your freezer is to use an energy monitor, also known as a watt meter or a kill-a-watt meter. This is a device that plugs into the wall outlet and displays the power consumption of the appliance that is connected to it. You can find energy monitors online or at hardware stores for around $20 to $40.

To use an energy monitor, follow these steps:

  • Plug the energy monitor into the wall outlet where you want to connect your freezer.
  • Plug your freezer into the energy monitor and turn it on.
  • Wait for 24 hours and check the display on the energy monitor. It should show the total kWh used by your freezer in that period.
  • Divide the kWh by 24 to get the average kWh per hour.
  • Multiply the kWh per hour by the electricity price per kWh in your area to get the cost per hour.
  • Multiply the cost per hour by 24 to get the cost per day.

For example, if your energy monitor shows that your freezer used 20 kWh in 24 hours, then the average kWh per hour is 20/24 = 0.83. If the electricity price in your area is $0.12 per kWh, then the cost per hour is 0.83 x 0.12 = $0.10. The cost per day is 0.10 x 24 = $2.40.

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Alternatively, you can use an online calculator to estimate the electricity usage of your freezer based on its wattage, which is usually indicated on the label or the manual of the appliance. However, this method may not be very accurate, as the wattage only represents the maximum power that the freezer can draw, and not the actual power that it uses throughout the day. The actual power consumption depends on the compressor cycles, which are influenced by the temperature settings, the ambient temperature, and the frequency of opening and closing the door.

How to Choose an Energy-Efficient Freezer

If you are in the market for a new freezer, you may want to consider the energy efficiency of the model, as it can have a significant impact on your electricity bill and your environmental footprint. Here are some tips on how to choose an energy-efficient freezer:

  • Look for the ENERGY STAR label. ENERGY STAR is a program that certifies appliances that meet strict energy efficiency standards set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. ENERGY STAR freezers use at least 10% less energy than the federal minimum standard, and can save you up to $70 per year on your electricity bill.
  • Choose the right size and type. The size and type of the freezer affect its energy consumption. Generally, the larger the freezer, the more energy it uses. However, you also want to avoid buying a freezer that is too small for your needs, as this may cause you to overfill it or open it more frequently, which can also increase the energy usage. The type of the freezer also matters, as chest freezers tend to be more energy-efficient than upright freezers, as they have better insulation and less cold air loss when the door is opened. However, chest freezers may also take up more floor space and be less convenient to access than upright freezers, so you need to weigh the pros and cons of each option.
  • Compare the annual energy consumption. Another way to compare the energy efficiency of different freezers is to look at their annual energy consumption, which is usually expressed in kWh per year. This information can be found on the yellow EnergyGuide label that is attached to the appliance, or on the manufacturer’s website. The lower the annual energy consumption, the more energy-efficient the freezer is. However, you should also consider the size and capacity of the freezer, as a larger freezer may have a higher annual energy consumption, but a lower energy consumption per cubic foot.
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How to Reduce the Energy Consumption of Your Existing Freezer

If you already have a freezer and want to reduce its energy consumption, there are some simple steps that you can take to make it more efficient and save money on your electricity bill. Here are some suggestions:

  • Check the temperature settings. The ideal temperature for a freezer is 0°F or -18°C. Setting the temperature lower than this will not make your food last longer, but will only waste energy and increase the risk of frost buildup. You can use a thermometer to check the temperature inside your freezer and adjust the settings accordingly.
  • Keep your freezer full, but not too full. A full freezer is more efficient than an empty one, as the frozen food acts as insulation and reduces the amount of cold air that escapes when the door is opened. However, you should also avoid overfilling your freezer, as this can reduce the air circulation and make the compressor work harder. A good rule of thumb is to leave about an inch of space around each item and between the items and the walls of the freezer.
  • Defrost your freezer regularly. If your freezer is not frost-free, you should defrost it at least once or twice a year, or whenever the frost layer reaches a quarter of an inch thick. Frost buildup can reduce the efficiency of your freezer and increase its energy consumption by up to 30%. To defrost your freezer, you should unplug it, remove all the food, and let the ice melt naturally or use a hairdryer or a fan to speed up the process. Do not use sharp objects or hot water to remove the ice, as this can damage the freezer. After defrosting, wipe the freezer dry and plug it back in.
  • Clean the coils and seals. The coils and seals of your freezer are also important for its energy efficiency. The coils are located at the back or the bottom of the freezer, and they help to dissipate the heat generated by the compressor. The seals are the rubber gaskets that line the door and prevent the cold air from escaping. You should clean the coils and seals at least once a year, or more often if they are dirty or dusty. To clean the coils, you should unplug the freezer, vacuum or brush the dust off the coils, and plug the freezer back in. To clean the seals, you should wipe them with a damp cloth and check for any cracks or gaps. If the seals are worn or damaged, you should replace them as soon as possible.
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Conclusion

The electricity usage of a freezer per day depends on various factors, such as the size, type, and efficiency of the model, as well as the temperature settings, the ambient temperature, and the frequency of opening and closing the door. The average electricity consumption of a freezer per day is between 0.8 and 1.2 kWh, which translates to an annual cost of $35 to $53, based on the national average electricity price of $0.12 per kWh. However, you can reduce the energy consumption of your freezer by choosing an energy-efficient model, checking the temperature settings, keeping the freezer full but not too full, defrosting the freezer regularly, and cleaning the coils and seals. By following these tips, you can save money on your electricity bill and help the environment by reducing your carbon footprint.