- Airpak - Offers software for modeling air flow, thermal transfer, and contaminant distribution in ventilation systems and other indoor environments. Includes online demonstration, contact information, and sample output.
- Clean Air Delivery Rate - Explains this rating system for air cleaners and shows application examples. Also provides a tutorial about air cleaners.
- Healthy Home and Workplace Pty. Ltd. - Information about health issues relating to indoor living and working environments as well as safe housing and associated technologies.
- Indoor Environment Connections - Offers information about a trade magazine for commercial, industrial, and institutional building owners providing data about indoor environmental issues.
