- Air-Conditioning and Refrigeration Institute
National trade association representing manufacturers of North American produced central air-conditioning and commercial refrigeration equipment. Develops standards, provides consumer information and trade shows.
- Air-Conditioning Contractors of America
The largest association of HVAC/R contractors presents training sessions and provides newsletters for its members.
- American Society for Testing and Materials
One of the largest voluntary standards development organizations in the world providing books, journals, workshops, and training courses for its members.
- American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc.
Provides research in the area of HVAC, standards, educational opportunities, and publications for its members.
- American Society of Mechanical Engineers
Organization provides codes and standards, educational and job opportunities, certification and accreditation programs, journals and newsletters for its members.
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- High Performance HVAC
Highlights the latest advances in technology pertaining to the residential and commercial HVAC field (air conditioning and heating). For the general public as well as HVAC professionals.
- HVAC-Talk
Discussion bulletin board for HVAC professionals.
- SNIPS
Magazine for those employed in the sheet metal, heating, air conditioning, ventilation and metal roofing industries. Latest and archived issues available.
- Texas Department of Licensing and Regulation
Provides resources including licensing and exams; continuing education; employment opportunities and FAQ's, Laws, Rules and Guidelines.