The conditions inside buildings and structures – especially humidity, thermal conditions, and the presence of chemical, biological and physical contaminants in indoor air – have a significant effect on the health and comfort of occupants. Market failures such as information deficits, split incentives, and externalities, are preventing many buildings in the EU from meeting generally accepted benchmarks of Indoor Environmental Quality. Eurovent advocates for regulatory solutions that can overcome these market failures to ensure that everyone can live, learn, and work in healthy and comfortable indoor spaces.