www.acca.org
Air Conditioning Contractors of America (ACCA) is the contractor's Knowledge Source. From technical topics to management tips, ACCA is your source for the knowledge and information you need to run a successful contracting business.
www.ari.org
The Air-Conditioning and Refrigeration Institute (ARI) is the national trade association representing manufacturers of more than 90 percent of North American produced central air-conditioning and commercial refrigeration equipment. ARI's national headquarters is located in Arlington, Virginia, at the Ballston Metro Stop, just minutes from downtown Washington, DC.
www.natex.org
North American Technician Excellence, Inc. (NATE) is the leading certification program for technicians in the heating, ventilation, air-conditioning, and refrigeration (HVAC/R) industry and is the only test supported by the entire industry.
