Study of the Uncertainties Influencing the Energy Performance Assessments of Two Very Different Urban Houses in Wallonia

Implemented by the European EPB directives, the Energy Performance Certification has been designed by authorities to “provide clear information about the energy performance of a building”. Studies led in Wallonia show however that official results are often too distant from reality and difficult to understand for the lay person. This paper focuses on the comparison between two certified old urban brick single-family houses in the Walloon residential stock: a highly efficiently renovated “exemplary building”, described in detail, versus an inefficient and poorly described second house. After pr... Mehr ...