Indoor Air Quality Association
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.iaqa.org/

American Indoor Air Quality Council

http://www.iaqcouncil.org/

American Industrial Hygiene Association

http://www.aiha.org/Content

American Conference of Governing Industrial Hygienist

http://www.acgih.org/home.htm

American Duct Cleaners Association

http://www.nadca.com/