ᐅ Energy Performance Certificate – "Result as KfW 70/55/40/etc?"

Hello,

we received the energy performance certificate today and are wondering how to interpret it and what the results mean, especially how to classify our building in relation to the KfW standards (70, 55, 40, etc.).

We built a detached single-family house according to the 2016 Energy Saving Ordinance. The most important relevant features in this case are: air-to-water heat pump, controlled residential ventilation, triple-glazed windows, insulated roof, 36.5 cm (14.4 inches) aerated concrete walls, basement insulated on the side and floor, wood stove with a maximum output of 5.6 kW (a small heating contribution from the wood stove was included, which apparently is only allowed under the minimum building standard but would likely be excluded under KfW).

Now the results:

Final energy demand: 20.4 kWh/(m²*a) (A+)
Primary energy demand of the building: 29.3 kWh/(m²*a) (Requirement: 48.4 kWh/(m²*a) (A/A+))
Procedure according to DIN V 4108-6 and DIN V 4701-10
Air tightness test n50 = 0.68
Compliance with the Renewable Energy Heat Act requirements = 278.8%

What does this mean? Is this now "KfW 55" standard or even better? What would, for example, a passive house rating look like?

Thanks!

That doesn’t tell us much without having the same data for the reference building.

But since you already have the energy performance certificate in hand, the building must have been constructed. Did you use any KfW funding? This question really should have been asked much earlier.