E means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. E Fujitsu E24-9 TOUCH, E, 16 kWh, A bis G Fujitsu E24-9 TOUCH. Energieeffizienzklasse (SDR): E, Energieverbrauch (SDR) pro 1.000 Stunden: 16 kWh, Energieeffizienzskala: A bis G