Energy saving is an explicit goal of housing retrofitting in both the Netherlands and China. Retrofit providers expect to achieve this goal by applying insulation to apartment buildings and improvements in heating, cooling and ventilation. The aim of this paper is to explore both conceptually and empirically the interactions between householders and retrofit providers. Interaction activities are conceptualized in a framework of overlapping practices of retrofitting and everyday life. Empirical material is derived from interviews with retrofit providers and householders in the Netherlands and China. This paper shows that full energy saving potential in housing retrofitting fails to be accomplished, due to a limited involvement of householders at the consumption junctions in retrofit processes. Central to this failure are the limited options for residents to share pre-retrofit living experiences, to test future housing equipment beforehand and to customize retrofit packages. Also post-retrofit educational support, evaluation and monitoring is falling short to engage householders in their appropriation of their retrofitted apartment.