International Association of Certified Indoor Air Consultants (IAC2) logo

Join IAC2 for $1/year!

International Association of Certified Indoor Air Consultants (IAC2)

IAC2 is a certifying body of indoor air consultants specializing in mold and radon testing services.


To become IAC2 Certified, you must provide proof of qualifying education, such as a state license for mold or radon services, or complete one of InterNACHI’s online radon or mold courses. A copy of your license or InterNACHI® Certificate of Completion is required with your application. Once certified, you’ll be eligible for a directory listing, downloadable certificates and logos, and other business development resources.

Visit the Professional Designation page for more information on IAC2 Certification and the Certification Requirements page for the recommended courses to qualify.