As an expert in the field of energy efficiency and household appliances, I can provide you with a comprehensive answer regarding the electricity usage of refrigerators.

Refrigerators are one of the most essential appliances in any household, and their primary function is to keep food fresh and prevent spoilage. However, they are also one of the most energy-consuming appliances in the home. The amount of electricity a refrigerator uses can vary greatly depending on several factors, including its age, size, efficiency rating, and how it is used.

**Energy Consumption of Older Refrigerators**
Older refrigerators, especially those manufactured before 1986, can be quite energy-intensive. According to some estimates, an older fridge can use up to 1400 kWh of electricity per year. This high energy consumption is primarily due to outdated technology and lack of energy-saving features that are common in modern appliances.

Advancements in Energy-Efficient Models
Thankfully, there have been significant advancements in refrigerator technology over the years. Modern energy-efficient models use only about 350 kWh per year, which represents a substantial reduction of approximately 75% compared to older models. This reduction in energy usage not only benefits the environment but also translates into significant savings for consumers.

Cost Savings
The financial benefits of switching to an energy-efficient refrigerator can be quite substantial. For instance, at a rate of 15 cents per kWh, trading in a pre-1986 refrigerator for a new, efficient one could save a household about $158 per year in electricity costs. This is a considerable amount, especially when you consider that the upfront cost of a new refrigerator can be offset by the savings on energy bills over time.

Factors Affecting Electricity Usage
It's important to note that the actual electricity usage of a refrigerator can be influenced by various factors. The size of the refrigerator, its age, and whether it has energy-saving features such as automatic defrosting, adjustable thermostats, and door alarms can all impact its energy efficiency. Additionally, how a refrigerator is used and maintained can also affect its electricity consumption. For example, frequently opening and closing the door, not properly sealing the door, or overloading the fridge can all lead to increased energy usage.

Conclusion
In conclusion, while older refrigerators can indeed use a significant amount of electricity, there has been a substantial improvement in energy efficiency with newer models. Making the switch to an energy-efficient refrigerator not only helps to reduce your carbon footprint but can also lead to considerable savings on your electricity bills. It is always advisable to check the energy efficiency rating of any refrigerator before making a purchase and to follow best practices for usage and maintenance to ensure optimal performance and energy savings.

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fridge uses 1400 kWh a year, while a modern energy-efficient model uses only 350 kWh -- a whopping 75% reduction. At 15-- kWh, trading in a pre-1986 fridge for a new efficient one would save about $158 a year in electricity costs. And some older fridges are even worse than the average.read more >>