How Many Watts is the Power of a Refrigerator: How to Choose the Right One for Your Needs

How much electricity does a refrigerator consume in a day? Guide on how to calculate based on the refrigerator’s power capacity

To determine the amount of electricity consumed by a refrigerator in a day, we can use the following formula:

A = P x t

Where:

• A is the amount of electricity consumed by the refrigerator over a certain period of time (W/h or kW/h).
• P is the power capacity of the refrigerator (W or kW).
• t is the duration of refrigerator usage (h).

For conventional refrigerators

Example: A conventional refrigerator with a capacity of 160 liters and a power capacity of 90W (0.09kW).

A=0.09kW×24hours=2.16kWh≈2.16 kWh

Thus, in an average month of 30 days, the refrigerator will consume approximately 65 kWh of electricity. Calculating based on the current tier 2 electricity price of 1.866 VND/kWh, it would cost:

65×1.866=121.290 VND

Another example: Calculating the electricity consumption of a typical refrigerator: Suppose a typical refrigerator has a capacity of 130 liters and a power capacity of 85W.

A=85×24=2040W,

equivalent to 2.04 kWh of electricity consumed by the refrigerator in a day.

For inverter refrigerators

Inverter technology in refrigerators helps control power capacity to avoid energy waste, thereby reducing electricity consumption per day under optimal installation and usage conditions, often saving up to 40 – 60% of energy.

A clear example of calculating the electricity consumption of an inverter refrigerator:

For an inverter refrigerator with a capacity of 569 liters and a power consumption of 237W, the electricity consumption in a day is calculated as follows:

150×24=5688Wh,

equivalent to 5.688 kWh.

However, since this refrigerator utilizes inverter technology saving 40% of electricity, the actual electricity consumption will decrease by 40%, which means:

5688×60%≈3412Wh,

equivalent to 3.412 kWh in a day. This saves 40%, or 3.412 kWh.

Tips for using a refrigerator to save electricity

To use the refrigerator most efficiently, follow these guidelines:

• Keep the refrigerator away from high heat sources:

Place the refrigerator in a well-ventilated area, away from direct sunlight and high temperatures from external heat sources.

The ambient temperature around the refrigerator affects its electricity consumption.

• Use the refrigerator at a reasonable temperature:

Set the temperature inside the refrigerator and freezer compartments appropriately according to your usage needs.

Too low or too high temperatures will increase the refrigerator’s electricity consumption.

• Avoid overloading the refrigerator with food:

Do not overcrowd the refrigerator with too much food to ensure proper air circulation.

The refrigerator operates more efficiently when it is not overloaded.

• Do not place hot food in the refrigerator:

Putting hot food in the refrigerator increases the internal temperature and leads to higher electricity consumption.

Allow hot food to cool down before placing it in the refrigerator.

• Reduce the frequency of opening the refrigerator door:

Opening and closing the refrigerator door frequently increases electricity consumption.

Retrieve or store items in the refrigerator all at once to reduce the number of door openings.

• Regular cleaning and maintenance:

Regularly clean the refrigerator to ensure the cooling system operates efficiently and saves electricity.

Inspect and maintain the refrigerator’s cooling system to ensure efficient operation.