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How Many Watts Does a Refrigerator Use? Get Acquainted Now

How Many Watts Does a Refrigerator Use? Get Acquainted Now

When it comes to household appliances, the refrigerator is one of the most energy-intensive devices that we use every day. And this directly affects our electricity bills and our overall carbon footprint. So, it’s crucial to understand how much energy the refrigerator consumes. Essentially, the power consumption of a refrigerator is measured in watts and can vary significantly depending on various factors such as the size, model, age, and usage patterns of the appliance.

This article will explore in detail the question, “How many watts does a refrigerator use?” It will also guide you on how to calculate refrigerator power consumption, the factors that affect the consumption, and how to optimize its usage to save both money and energy.

How to Calculate the Wattage of Your Refrigerator

To calculate the wattage of your refrigerator, you’ll need to know the voltage and the amperage rating. While the voltage rating tells you how much electrical potential the refrigerator needs to operate, the amperage rating tells you how much current it draws. Here is how to calculate the wattage of a refrigerator:

Step one: Check the label on the refrigerator to find the voltage rating. You can find it either on the back or bottom of the fridge or even in the manual. It should be either 120V or 240V.

Step two: Find the amperage rating by also checking the label or manual that came with the refrigerator. The amperage rating is typically given in amps (A) or milliamps (mA).

Step three:Now that you know the voltage and amperage ratings, you can calculate the wattage by multiplying them together. Here is the formula to use: Voltage x Amperage = Wattage.

For example, let’s say your refrigerator has a voltage rating of 120V and an amperage rating of 5A. To calculate your refrigerator watts, you would multiply 120V by 5A, giving you a wattage of 600 watts. As for the specific question about how many watts does a refrigerator use per hour, you should also consider the running compressor inside which may only run about 30% of the time. So you can divide the total 600 watts by about 3, and get a number showing the average wattage a refrigerator use per hour.

Alternatively, if you don’t have access to the voltage and amperage ratings of your refrigerator, you can use a wattmeter to measure the actual power consumption. The device plugs into the outlet and measures the wattage used.

Factors that Affect the Power Consumption

Several factors can affect the power consumption of refrigerators no matter the type. The factors include:

Size and capacity

Larger refrigerators have more storage space and require more energy. And that’s because they have to cool a larger volume of air and keep more food and drinks cool. However, smaller refrigerators don’t consume much power.

Energy efficiency rating.

Refrigerators with a higher energy efficiency rating consume less power as they use more efficient compressors, insulation, and other essential features that help to keep the temperature stable without wasting energy.

Temperature settings

The ideal temperature range for most refrigerators is between 37 and 40 degrees Fahrenheit (2.8 and 4.4 degrees Celsius) for the fresh food compartment and between 0 and 5 degrees Fahrenheit (-17.8 and -15 Celsius) for the freezer compartment. So, setting the temperature lower than necessary causes the refrigerator to work harder and use more energy.

Frequency of use

Every time the refrigerator door is opened cold air escapes and warm air enters, making the refrigerator work harder to maintain its temperature. To minimize power consumption, it is best to limit the number of times the refrigerator door is opened and the duration it is left open.


Proper maintenance of the refrigerator is essential to keep it operating efficiently and using less power. Dirty and clogged coils make the refrigerator work harder and consume more energy. So, it’s important to clean the coils regularly.

What Size Generator Do I Need for a Refrigerator?

During a power outage, you may need a refrigerator generator to power it. Also, you probably have been wondering can a power outage damage a refrigerator. The answer is yes. When the power goes out, the temperature inside the refrigerator will begin to rise, which can cause food to spoil and create bacteria. A prolonged power outage may also cause the compressor to overheat or overwork.

So what kind of generator should I prepare for a refrigerator? The size of the generator you need for a refrigerator depends on the starting and running wattage of your refrigerator model.

Generally, a refrigerator’s running wattage ranges between 100 to 400 watts with the starting wattage being two to three times higher. So, for example, if your refrigerator’s running wattage is 200 watts and its starting wattage is 600 watts, you will need a generator with a minimum output of 600 watts.

Thankfully, there are a lot of generators that will help protect your refrigerator from damage and keep your food safe during a power outage. One of the ideal solutions is Anker 757 PowerHouse. This long-lasting and portable power station comes with a 1229Wh capacity and 1500 wattage which is enough to power both small-sized and medium-sized refrigerators.


Overall, knowing how many watts a refrigerator uses and how to calculate is essential for determining the right size generator needed during power outages. It also helps you to understand your refrigerator’s energy efficiency. The average wattage of a refrigerator varies from model to model and can be affected by factors like size, maintenance, and temperature settings.

FAQ on How many Watts does a Refrigerator Use?

What Is the Average Refrigerator Wattage?

The average refrigerator wattage can range between 100 to 400 watts, with most models falling in the range of 150 to 300 watts. To determine the number of watts used by most regular refrigerators, simply multiply the number of amps specified on its nameplate with a standard 120 volts. Since the compressors in fridges usually run only about one-third of their total time, then divide the sum wattage by three for a relatively exact result.

How Many Watts Does a 220 Fridge Use?

The wattage of a 220 fridge will depend on the amperage of the specific model, the size of the fridge, etc. However, most medium-sized 220V home refrigerators will consume around 350 and 780 watts while running.

Can I Run a Refrigerator on an Inverter?

Yes, you can run a refrigerator on an inverter. It is particularly useful during refrigerator power outages or in areas with unreliable electricity supply. However, you need to make sure that the inverter has sufficient capacity to handle the refrigerator’s starting and running wattage. Assuming your fridge runs at 100 watts, you'll need an inverter that is rated for at least 150 watts to run it safely and reliably. Besides, you will also need a battery to power the inverter.

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