First identify the label scheme, its version, and the test program. A class, star rating, or annual estimate can only be interpreted within the conditions that define it.
What to check before comparing
Look for the model, capacity, energy unit, cycle or year basis, water, and program. Verify whether the data refers to wash or wash and dry. A QR code or official datasheet helps confirm that you are reading the correct variant.
| Scheme | Useful reading | Limit |
|---|---|---|
| European Union | A-G scale, energy per 100 cycles, and water per cycle in the indicated test | Does not express the consumption of any program |
| EnergyGuide, United States | Comparative estimates of energy and operating cost | The cost uses usage and price assumptions, not your exact rate |
| ENERGY STAR | Identifies compliance with certification program criteria | This is not the same information as EnergyGuide |
| Energy Rating and Water Rating in Australia | Stars and energy or water values according to the label | Check capacity, program, and frequency assumptions |
The bases are described by the European Commission, the FTC for EnergyGuide and the Energy Rating program. In each local publication, the current authority and version must be verified.
Do not convert scales by appearance
A star does not equal a letter, and an annual estimate does not equal a per-cycle figure without knowing its frequency. Compare models with suitable capacity and equivalent energy and water; review noise and spin separately.
A test label does not describe every option you select at home. Load and program changes can alter real-world results.
Keep the official datasheet and test basis with the value you use; avoid comparing only the large symbol on the label.