Interpretation of Energy Efficiency Labeling for Home Air Conditioning: A Selection Guide under the New National Standard
Published Time:
2025-12-18
The energy efficiency label of air conditioning is the core basis for judging energy-saving performance.
The energy efficiency label of air conditioning is the core basis for judging energy-saving performance. After the implementation of the new national standard, the energy efficiency level has been changed from the original level three to level five, and the energy-saving advantages of level one energy efficiency products are more prominent. The energy efficiency ratio (EER) of household air conditioning reflects the refrigeration efficiency. The EER of the first level energy efficiency variable frequency hanging machine is usually ≥ 4.5, while that of fixed frequency models is ≥ 3.6; The heating performance is measured by the Heating Energy Efficiency Ratio (COP), and the COP of primary frequency converter models is generally ≥ 4.2.
When making a purchase, two major misconceptions should be avoided: one is the belief that "the higher the energy efficiency level, the better", but in reality, it should be matched with the frequency of use - choosing three levels of energy efficiency for short-term use is more cost-effective, and choosing one level of energy efficiency for long-term use is more cost-effective; The second is to ignore the matching between customized cooling capacity and room area. A room of 10-15 square meters is suitable for a 1-horsepower model, while a room of 20-30 square meters requires 2 horsepower. Improper matching can lead to a surge in energy consumption of more than 30%. In addition, the "seasonal energy efficiency ratio (APF)" on the energy efficiency label can better reflect the actual energy consumption. Variable frequency models must be labeled with APF, while fixed frequency models can be labeled with EER, which is the key distinguishing point between the two.
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