ASHRAE   http://www.ashrae.org/

Air Movement and Control Association International, Inc. (AMCA)   http://www.amca.org/

Air-Conditioning Contractors of America (ACCA)   http://www.acca.org/

Alliance to Save Energy (ASE)   http://www.ase.org/

American Institute of Architects (AIA)   http://www.aia.org/

American Public Power Association (APPA)   http://www.appanet.org/

American Society of Mechanical Engineers (ASME)   http://www.asme.org/

American Subcontractors' Association, Inc. (ASA)    http://www.asaonline.com/

Association of Energy Engineers (AEE)    http://www.aeecenter.org/

BOCA International, Inc    http://www.bocai.org/

BOMA International    http://www.boma.org-/

HVAC Excellence    http://www.hvacexcellence.org/

Heating, Refrigeration, and Air Conditioning Institute of Canada (HRAI)    http://www.hrai.ca/

International Code Council (ICC)    http://www.intlcode.org/

International Facility Management Association    http://www.ifma.org/

LonMark Interoperability Association    http://www.lonmark.org/

National Comfort Institute (NCI)    http://www.ncinstitute.com/

National Society of Professional Engineers (NSPE)    http://www.nspe.org/

New Buildings' Institute (NBI)   http://www.newbuildings.org/

Refrigeration Service Engineers Society (RSES)   http://www.rses.org/