To promote good indoor air quality (IAQ) and public awareness of its importance, the Government has introduced an IAQ Management Programme. One of the core elements of the programme is a voluntary IAQ Certification Scheme for Offices and Public Places. The certification scheme is for buildings or premises used as offices and public places that are served by mechanical ventilation and air-conditioning systems. It aims to recognise good indoor air quality management practices and to provide incentives for owners of buildings/premises or property management companies to pursue the best level of indoor air quality.