How Many Watts Does A Refrigerator Use?

Keeping food fresh in a refrigerator is a commodity that people cannot do without today. Most people don’t realize that a fridge could cost them more than it should if not well managed. According to the University of Florida, a domestic refrigerator uses 350-780 watts on average.

According to the University of Florida, a domestic refrigerator uses 350-780 watts on average.

Several factors influence refrigerator power usage. These factors include the type, size, condition, location, age, and use of the refrigerator. The refrigerator’s placement in the kitchen and the room temperature also influence a fridge’s energy consumption.

Different types of refrigerators have different energy requirements. For example, the small-mini fridges are more energy-efficient than full-sized kitchen refrigerators because they need less power to run.

Experts also say that the side-by-side fridge models need many watts than the top-mount refrigerators are more efficient than the side-by-side fridge models. The top-down model is, thus, more efficient than the side-by-side model.

When purchasing a new fridge, you should also consider the fridge’s model. The more recent the model, the more power-efficient it could be. For example, the new Energy-Star certified refrigerator is 9% more efficient in energy usage compared to other models, especially the older ones.

Power usage also varies with the refrigerator’s usage. A commercial display fridge could use 10 times more energy than a domestic fridge. Moreover, a frequently used fridge uses more power as the compressor works harder to keep things cool.

How Many Watts Does A Refrigerator Use?
How Many Watts Does A Refrigerator Use?

Estimate Your Refrigerator’s Power Consumption

You can determine the average wattage of your refrigerator by multiplying the Volts and amps figures referenced on a sticker at the back of the fridge. The reference figures can also behind the front kick plate, in the inner wall of the refrigerator, or the manufacturer’s nameplate below the door.

After obtaining the wattage of your refrigerator, you can calculate the cost of your refrigerator’s energy consumption using the formula: wattage P (w) X operating hours divided by 1000 (Refrigerator Power Consumption E(kWh) = P(W) x Hr / 1000).

The cost of your refrigerator’s energy consumption using the formula: wattage P (w) X operating hours divided by 1000 (Refrigerator Power Consumption E(kWh) = P(W) x Hr / 1000).

For example, if your refrigerator’s wattage is 350 watts and the estimated usage is 8 hours a day which is often equivalent to a 33% duty cycle, then the total energy used is 350w X 8h / 1000= 2.8 kilowatt-hours per day. The rate of power usage is $0.25 per day, then the cost of refrigerator energy use in a year is 2.8 kWh/day X 365 days X $0.25 = $255.50 per year.

You can go a mile further and get an actual wattage of your refrigerator using a power meter. A power meter measures the actual energy use rather than give an estimate. To use it, plug it in your fridge for a day and then see the number of kWh it uses. Having an accurate figure could enable you to manage your energy consumption more efficiently.

How Much Electricity Does My Refrigerator Use?

A refrigerator is one of the home appliances that run 24/7. For this reason, most people believe that it uses a lot of wattage. However, you might be surprised how little power your refrigerator consumes compared to other appliances such as a water heater, air conditioner, or clothes dryer.

The refrigerator consumes about 15 to 20% of your electricity bill. To reduce your fridge’s energy consumption, you must understand how it works and how power is consumed. The refrigerator consists of an internal fan unit, a compressor, control board, lighting circuits, etc. The compressor consumes 90% of the power, while the fan unit uses about 8 %. The remaining 2% is shared between the lighting circuit and the control board equally.

The refrigerator consumes about 15 to 20% of your electricity bill

So let’s say, for example, you have a 165- liter fridge that is rated at 200Watts within 24 hours of operation. Of 24 hours, 6 are compressor hours, while 18 are non-compressor hours. When a refrigerator runs with the compressor, it consumes total wattage and only 10% power without the compressor.

Hence, in a day, the electricity consumed would be (6h x wattage + 18 x 10% of the wattage)/ 1000. In our case, the average power usage per day is 6 × 200W + 18 x 10% of 200)/ 1000 = 1.56 kilowatt-hours. If the refrigerator’s compressor were running for 24 hours, the power consumption would be 24 x 200 / 1000= 4.8 kWh. This means that the refrigerator consumes less energy when it runs intermittently with and without a compressor.

Four Ways to Cut Fridge Power Consumption

Experts say that certified fridges use about 20% less power than conventional fridges. However, if you have an older one, here are four tips you could use to reduce the power consumption of your refrigerator.

  • Avoid jamming the fridge between cabinets because it prevents free air circulation. 
  • Please place them in a cool place with adequate air circulation.
  • You could also use it to make the bar and drinks fridges more efficient by using timers on them.
  • Another tactic is resetting the factory settings to 4 degrees for a refrigerator, and -15 for a freezer is safe and efficient.

What Size of Generator Do I Need to Run a Refrigerator?

There are two figures that you should be aware of; starring watts and running watts. The starting watts show you the number of watts required to start the fridge or freezer, while the running watts indicate the power one needs to keep the refrigerator going.

On average, home refrigerators use about 1000 to 2000 watts when starting, although this greatly depends on the size of the fridge. A generator that can deliver at least 2000 starting watts is sufficient to run both a freezer and a refrigerator without any hitches.

A generator that can deliver at least 2000 starting watts is sufficient to run both a freezer and a refrigerator without any hitches.

However, it’s always good to get a generator with a slightly higher voltage to be on the safe side. Extra power allows the refrigerator to start if the fridge requires it and run other household appliances.

Calculate Average Wattage for Refrigerators

To obtain the average wattage use for your fridge, you need to multiply the figures of the volts by the amps at the back of the fridge. Modern refrigerators have a starting wattage of between 800-1200 watts-hours per day, while older ones use about 805 watts. To obtain the average wattage for your fridge, divide the wattage by 30 days.

Monthly Cost of a Refrigerator

Let’s say that you are charged 12 cents per kilowatt-hour for power, that the wattage of your refrigerator is 810 watts and the operating hours are 8. To determine the monthly cost of your refrigerator, multiply the wattage by the number of operating hours- 810 × 8= 6480. Then multiply this demand by 12 cents (6480w × 12)/ 1000= 77.76 cents a day.

To determine the monthly cost of your refrigerator, multiply the wattage by the number of operating hours- 810 × 8= 6480. Then multiply this demand by 12 cents (6480w × 12)/ 1000= 77.76 cents a day.

Tips for Reducing Fridge Energy Consumption

Place your Fridge in a Cool Dark Location

Always position your refrigerator away from heat sources such as cookers, ovens, or large windows that let in a lot of sunlight. Placing a fridge in place with a high ambient temperature makes the compressor work harder to expel the hot air and keep the food cold. Placing the refrigerator in a cool place saves energy.

Keep Fridge Coils Clean.

Condenser coils often collect dirt with refrigerator use. Cleaning them can reduce power consumption. A clean coil typically functions more efficiently than a dirty one, as no energy is used in dislodging the dirt.

Keep the Fridge Door Closed for as Much Time as Possible

One of the best ways of reducing your refrigerator’s power usage is avoiding the habit of leaving the door open. The compressor begins to work as soon as the door is flung open, increasing the number of watts used to power the fridge. Moving with speed when grabbing things from the refrigerator prevents the entry of too much warm air in.

Clean it Regularly

The refrigerator also needs a routine cleaning every three months. It needs to be pulled from the wall and thoroughly dusted, then cleaned. Clean the coil and the kick plate to ensure there is enough space for the appliance to breathe.

Willing to spend a Little? Replace the Gaskets

Experts say that gaskets can keep the air cool. When the refrigerator’s rubber gaskets no longer keep the cold air out, you need to replace it as fast as possible or buy an appliance that saves on energy if you have extra money.

Set the Right Temperature

The factory settings keep the refrigerator cooler than is necessary. Hence, resetting the ideal temperature could save a little energy, especially if you live in a place that has a calm atmosphere. The optimal temperature for a domestic fridge is 37 degrees Fahrenheit (2.78 °C) and 0 degrees for a freezer.

Cool Food Only, and Lots of it

Before refrigerating leftovers or hot food, it is essential to take time to cool them. Putting room temperature or cool food in the fridge prevents your compressor from overworking. It is also necessary to fill the refrigerator and the freezer about three-quarters full to increase efficiency, as the appliances will not put extra effort to cool empty spaces.

Place it Away from Heat

Avoid placing fridges near heat sources like gas stoves, ovens, or microwaves. If a fridge is positioned in a warm place, the warm temperature increases energy consumption because more power is required to replace the warm air with cool air. It also increases energy consumption by nearly 40% and so raises the electric bill.

Using a Generator to Run a Refrigerator

You could use a generator to power your refrigerators during a power outage or if you live at a place that often experiences outages. It reduces energy consumption by enabling the refrigerator to maintain a low temperature.