Domestic VentilationDomestic Ventilation Training Course Why Do We Need Domestic Ventilation? 1. Improves Air Quality Ventilation removes indoor pollutants (e. g., carbon dioxide, VOCs, and odours) and ensures a fresh supply of oxygen. 2. Controls Moisture Everyday activities like cooking and showering generate moisture. Poor ventilation can lead to condensation, mould, and mildew, which can damage the property and impact health. 3. Supports Health Proper ventilation