Energy efficiency classes from 1 July 2014
| Energy efficiency class | Energy Efficiency Index |
|---|---|
| A+++ (most efficient) | EEI < 22 |
| A++ | 22 ≤ EEI < 33 |
| A+ | 33 ≤ EEI < 42 |
| A | 42 ≤ EEI < 55 |
| B | 55 ≤ EEI < 75 |
| C | 75 ≤ EEI < 95 |
| D | 95 ≤ EEI < 110 |
| E | 110 ≤ EEI < 125 |
| F | 125 ≤ EEI < 150 |
| G (least efficient) | EEI ≥ 150 |