Lean Screening for Greener Energy Consumption in Retrofitting a Residential Apartment Unit

Buildings consume a large portion of the global primary energy. They are also key contributors to CO2 emissions. Greener residential buildings part ‘Renovation Wave’ in European Green Deal. The purpose this study was explore usefulness energy consumption screening as seeking retrofitting opportunities older building stock. objective manage electromechanical systems for an existing apartment unit. parametrization drawn upon inspection items comprehensive electronic checklist—part official software—in order incur certification status building. extensive empirical intends discover options while offering glimpse influence intervention costs on final outcome. A supersaturated trial planner implemented drastically reduce time and volume experiments. Matrix data analysis chart-based sectioning general linear model regression seamlessly integrate into simple lean-and-agile solver engine that coordinates polyfactorial profiling joint multiple characteristics. showcased employed 14-run 24-factor scheme organize collection performance along with costs. It found effects may be slightly differentiated if simultaneously considered. four strong factors influenced were automation type hot water, types heating cooling systems, power systems. An category rating ‘B’ achieved; thus, original (‘C’) upgraded. renovation practically reduced by 47%. concurrent detected five influential effects—the water heating, control category, type, location system distribution network, efficiency network. overall approach shown simpler even more accurate than other potentially competitive methods. originality work lies its rareness, worldwide criticality, impact since it directly deals modernization units promoting greener performance.