Good indoor environmental quality (IEQ) and high energy efficiency in multifamily dwellings: How do tenants view the conditions needed to achieve both?

Abstract Sustainable housing that both creates good indoor environmental quality (IEQ) and avoids unnecessary energy use has proved difficult to realize. Renovations of multifamily houses provide an opportunity to find this balance. This study concerns whether tenants perceive that conditions for achieving sufficient IEQ with low energy use exist. Focus group interviews with 42 participants, in areas where the rents were in the lower range and included heating up to 21 °C, aimed to capture the tenants' perceptions of: IEQ and actions taken to regulate it; information and control; the connections between IEQ and energy use; and the role of the housing company. Good IEQ was crucial to interviewees, who described it as sufficient heat without draughts, ability to ventilate, and no disturbing sounds or smells. The main responsibility was attributed to the housing company, but daily regulation controlled by tenants. However, unclear interfaces between tenants and the systems that regulate IEQ make it difficult for tenants to act as a positive part of the system. Tenants did not link IEQ to energy use. A holistic view of the physical environment's affordances, including intuitive interfaces, could optimize the balance between good IEQ and energy use.