IAQ Control: A Framework for Action

Improving indoor air quality is a multifaceted endeavor that requires a strategic approach. There are four key strategies for achieving and maintaining good IAQ:

1. Source Control:
   • Identify and minimize pollutant sources within the indoor environment.
   • Choose low-emission building materials, furnishings, and cleaning products.
   • Properly maintain appliances and ventilation systems.
   • Adopt healthier habits, such as avoiding smoking indoors and using exhaust fans while cooking.
2. Local Extraction:
   • Employ localized exhaust systems (e.g., kitchen range hoods, bathroom exhaust fans) to capture pollutants at their source before they spread throughout the space.
   • Ensure proper design, installation, and maintenance of local exhaust systems for optimal performance.
3. Ventilation:
   • Provide adequate ventilation to dilute and remove indoor pollutants and excess moisture.
   • Choose the most suitable ventilation strategy (natural, mechanical, or hybrid) based on the building type, climate, and occupancy.
   • Optimize ventilation rates and air distribution patterns for maximum effectiveness.
4. Filtration and Air Cleaning:
   • Use filters and air cleaners to remove particulate matter, gases, and other pollutants from the air.
   • Select the appropriate type of air cleaner or filter based on the target pollutants and room size.
   • Regularly replace or clean filters to maintain their efficiency.

By combining these strategies, you can create a comprehensive approach to IAQ management that addresses both the sources of pollution and the mechanisms for removing them from the air. This integrated approach is essential for achieving and maintaining healthy and comfortable indoor environments.