Depuis 2021, tous les bâtiments neufs en Wallonie doivent répondre à la norme Q-Zen (Q-Zen pour Quasi Zéro Energie).
Depuis 2021, tous les bâtiments neufs en Wallonie doivent répondre à la norme Q-Zen (Q-Zen pour Quasi Zéro Energie). Cela implique donc que toutes les nouvelles constructions et grandes rénovations en Wallonie aient une consommation d'énergie proche de zéro.
Pour parvenir à respecter cette norme, l'isolation, l'étanchéité, le chauffage (p.ex. chaudière de classe énergétique A), la ventilation et les énergies renouvelables (p.ex utilisation de panneaux solaires thermiques) sont des aspects auxquels il faut être attentif.
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