Maintaining good indoor air quality (IAQ) post energy retrofit is essential to ensure the health and wellbeing of building occupants. In this study, a number of indoor air pollutants were measured in a sample of Irish homes pre and post deep energy retrofit (DER). Airborne concentrations of PM2.5 and formaldehyde showed significant increases (p <0.0001) post-retrofit. A health impact assessment was conducted and the results suggest that the greatest health burden (for lung cancer and all-cause mortality) was associated with exposure to PM2.5.
