> On the other hand if you had "8" how would you know if it's good or bad? It is not intuitive, especially if you keep adding more. You will know that, when me

> On the other hand if you had "8" how would you know if it's good or bad? It is not intuitive, especially if you keep adding more. You will know that, when measuring something, the higher, the better, for whatever definition of "better" applies (less CO2, less Watts, more good nutrients etc). If the scale changes, or the definition of "better", you now have "9" appliances, which will be better than "3" appliances with their 15 years old label still attached to them. With the current system you have to check "oh, it's A+ from 2017, I need to check the actual numbers anyway". And yes, I understand that those labels are mainly directed at new items bought right now, and only as "local" comparison. And that if you sell a "new" appliance today manufactured 5 years ago and the labels have changed, you need to update the labels on it. Still, it's cumbersome. You either update the scale ever 2 years or keep adding "+" for a while. EDIT: also, houses. those fuckers tend to last for tens of years while being sold and bought all the time in the meanwhile.