Wondering if you have to pay twice as much for power if you purchased a new refrigerator? Or you’re generally just curious about how much power a refrigerator needs to run? Stay on this ride with us as we’ll be addressing how many watts it will take to run a refrigerator.
Typically, it takes about 350 watts to run a small refrigerator and about 780 watts to run a bigger refrigerator.
What Does The ‘Watts’ Of A Refrigerator Signify?
Watts, as you may already know, is the unit used to measure power. And the power of an appliance can be defined as its ability to do work. It is also the rate at which energy is used.
Assuming an appliance runs on 500 Watts, this means that it uses 500 joules of energy per second. So you see why different appliances have different power ratings? Do you now understand why an air conditioner drains more energy compared to an electric shaver?
If you do, then…
How Do You Determine The Wattage Of An Appliance?
Most times, the wattage of an appliance is usually not indicated on it, so we have to determine it. And trust me when I say it’s easy, almost as easy as ABC!
All you need to do is to find the voltage of the appliance, its unit is in Volts which is denoted by V. Then, find the current of the appliance, whose unit is in Amperes, denoted by A.
Next, you determine the value of the product of both quantities, that is, the current and voltage. What we’re trying to say is that the product of the voltage and current quantities of the appliance gives the power in watts.
For example, an appliance with a voltage of 100V and current of 10A would have a power rating of 1000W (1KW), simply put. And how did we achieve this great feat? Simply, 100 × 10 to give a thousand!
Meanwhile, you can check out our post on how many amps a refrigerator uses if you want to know how much your fridge draws.
Want to be able to monitor the energy consumption at any given time in your home? We recommend getting energy usage monitors like the one below.
What Makes Power Ratings Differ In Refrigerators?
As I stated earlier, the power rating for a small refrigerator is different compared to a bigger one. This is due to a number of reasons.
i. Remember how to determine the power of an appliance where two quantities are multiplied? Now, the power of an appliance depends on these two quantities, the current and voltage. And since most appliances tend to have different values for their current and voltage, the power ratings are usually not the same.
Then, considering two refrigerators…
ii. For a bigger refrigerator, a larger volume of items has to be cooled. A bigger refrigerator would definitely have more space, meaning large quantities of food can be stored in it. Unlike a small refrigerator which probably doesn’t have so much space and doesn’t work as much to cool as much as a large refrigerator is required to cool.
iii. Another factor that contributes greatly to the power rating difference between refrigerators is the components of the fridge.
Due to the fact that a big refrigerator would be cooling a large amount, the components that would be selected need to withstand that amount of load. The compressor, for example, is an important component of the refrigerator, and it also comes with its own power rating. The compressor that would be used in a small refrigerator will have a higher power rating when compared to a small refrigerator.
How Many Watts Does It Take To Run A Refrigerator — Bottom Line
Basically, small refrigerators use up less energy, which is about 350 watts or Joules per second, while larger ones use about 780 watts.
So now we leave you to decide.
Would you rather have a small refrigerator which would consume less energy, but wouldn’t be able to store so much food items and perishables? Or you’d rather go for a bigger one, meaning increased energy bills, but more storage in the long run?
You can also check out this video to learn how many watts an RV residential refrigerator uses: