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- Thermal protection and modernisation of existing buildings
- . The EnerPHit standard requires either a maximum heating demand of 25 kWh/(m²a) (in central Europe) or ... irements for PHI certification of components. The heating demand calculated by the PHPP, and the quality... led, and in a last step, a ventilation system and heating and RES concepts are implemented, as can be se... llation of the ventilation system; renewal of the heating system before optimisation of the thermal prot