Possible energy efficiency classes
Space heaters (35° C, 55° C): A+++ to D Ӏ Combined space heaters: A⁺⁺⁺ to G Ӏ Combi heaters: A⁺⁺⁺ to D Ӏ Hot water preparation: A⁺ to F Ӏ Combination combi heaters: A⁺⁺⁺ to G Ӏ Hot water tanks: A⁺ to F Ӏ Domestic hot water preparation: A⁺ to F Ӏ Ventilation: A⁺ bis G

^{Technical changes and errors excepted}