Thus successive + symbols were added to the letter A, which initially symbolised the maximum efficiency. And the letters that identified lower efficiency (such as F and G) started to disappear.
The mutations of this scale confused consumers, who saw the letter A change from meaning "the best" to meaning "standard tending towards bad".
In August 2017 the European Commission enacted a new "rescaling": classes A +, A ++ and A +++ will now disappear and the original classification from A to G will return. Class A appliances will again become the top of the pyramid of energy efficiency and the venerable +++ will be suppressed.
This new labelling will not appear immediately or all at the same time, either. The first reclassified labels will not come in until 2020 and only in 2030 is it expected that all products will follow the new system.
So let's focus on the present. Appliances that are currently in your home and any that you can buy at the moment do not follow the new scale. So we will explain to you the workings of the old one, which will remain effective until 2020.
The energy indicator: the most and the least efficient devices
This type of design mimics the logic of the traffic light, shading colours from maximum efficiency (green) to the minimum level (red).
What it does is compare the consumption of the different generations of appliances, with 100% representing the consumption of the least efficient devices. The top and bottom of the scale are represented by A +++ (excellence in energy efficiency) and D (devices that are beginning to become obsolete).
Highly efficient consumption:
- A +++. Dark green, it represents consumption of less than 25%.
- A ++. With its intermediate green colour, it symbolizes consumption of less than 30%.
- A +. Its pale green colour represents consumption estimated as from 30% to 42%.
Moderately efficient consumption:
- A. Yellow in colour, it offers average consumption between 42% and 55%.
- B. Identified by the colour orange, it represents consumption of between 55% and 75%.
Low efficiency of consumption:
- C. Bright orange in colour, it represents a consumption level of between 75% and 90%.
- D. Red in colour, it indicates that it has a consumption level of between 90% and 100%.