How to Read the Energy Efficiency Label on Household Appliances

In many Brazilian households, the energy efficiency label is already a familiar part of buying household appliances. Even so, there can still be uncertainty about what each piece of information means and how it affects electricity bills. Its combination of letters, colours and figures shows how much energy an appliance uses, making it possible to compare similar models without relying solely on price or appearance.

How does the energy efficiency label work?

In effect, the label provides an “X-ray” of an appliance’s energy performance. Each colour band and letter identifies its consumption level in comparison with other products in the same category, such as refrigerators or washing machines.

Additional symbols also provide details about noise, capacity, internal volume and, in certain cases, particular technologies, such as inverter technology in air conditioners. Understanding this information can help consumers manage their household budget more effectively and avoid unexpected charges on their bill.

Watch a video on the Mundo da Elétrica YouTube channel explaining how to interpret household appliance energy consumption labels and select appliances that offer greater savings on electricity bills:

https://www.youtube.com/watch?v=y3n9E94oI1M

What does the letter on the energy efficiency label mean?

The prominent letter shows the product’s consumption class, in other words, whether the appliance is more economical or uses more energy than others in the same product group. Classes generally range from A, the most efficient, to G, the least efficient, while some sectors may also use ratings such as A+, A++ or A+++.

This rating is established through standardised tests that assess energy use under typical operating conditions. It allows consumers to compare, for instance, two refrigerators of a similar size. It is worth noting that the letter does not indicate overall quality; it only shows how much electricity is required to perform the same function.

How does energy efficiency affect electricity bills in practice?

The link between an efficiency class and the amount charged on a bill is chiefly reflected in estimated monthly consumption, shown in kWh/month. By multiplying this figure by the local electricity tariff, consumers can estimate how much the appliance may add to their household spending.

Certain usage habits and operating conditions can increase or reduce that effect, making the label an even more useful starting point for more informed everyday choices:

• Daily operating time: the more hours an appliance is switched on, the greater its contribution to the bill;
• Selected settings: long cycles, extreme temperatures and maximum power increase energy use;
• Up-to-date maintenance: dirty filters and damaged seals lower real-world efficiency;
• Correct installation: poorly installed appliances may need more energy to operate.

How can you use the energy efficiency label to make a better choice?

When purchasing a new household appliance, it is useful to review the label step by step, considering efficiency alongside size and features. Comparing models within the same category helps show whether investing in a more efficient appliance will be worthwhile over time.

Checking the efficiency class, comparing monthly consumption in kWh, confirming the actual capacity and considering the noise level are straightforward actions with practical benefits. The label therefore becomes more than a small detail on the packaging: it can help reduce waste, balance comfort with savings and make better use of every appliance in the home.