http://www.nafahq.org/. The National Air Filtration Association (NAFA) is the trade association for the air filter industry and is comprised of individuals and companies engaged in the sale, service and manufacture of air filtration products, worldwide.
http://www.iaqa.org/about . The Indoor Air Quality Association (IAQA) was established in 1995 to promote uniform standards, procedures and protocols in the Indoor Air Quality industry.
http://www.ashrae.org/ American Society of Heating, Refrigerating and Air-Conditioning Engineers.
http://www.acac.org/ American Council for Accredited Certification Where to find Indoor Air quality Consultants.
http://www.epa.gov/iaq/. Indoor air-related publications and resources, Indoor air-related Questions and Answers, An introduction to Indoor Air Quality.
http://www.acaai.org/allergist/allergies/Types/dust-allergy-information/Pages/indoor-allergies-relief.aspx. Where to find information about allergies.
http://www.health.state.mn.us/divs/eh/indoorair/voc/. Where to find information about volatile organic compounds.
http://www.cdc.gov/niosh/. The National Institute for Occupational Safety and Health.