ACCA - Air Conditioning Contractors of America
www.acca.org


AHRI - Air-Conditioning, Heating & Refrigeration Institute
www.ahrinet.org


AMCA - Air Movement & Control Association International, Inc.
www.amca.org


ASHRAE - American Society of Heating, Refrigerating & Air-Conditioning Engineers
www.ashrae.org


ASA - American Subcontractors Associations
www.asaonline.com


BMA – BACnet Manufacturers Association
www.bacnetinternational.org


BOCA - Building Officials & Code Administrators
http://aec.ihs.com/collections/boca/


BOMA - Building Owners & Managers
www.boma.org


BTL – BACnet Testing Laboratories
www.bacnetinternational.org/


NECA - National Electrical Contractors Association
www.necanet.org/


SMACNA - Sheet Metal & Air-Conditioning Contractors' National Association
www.smacna.org/