The Air Conditioning Contractors of America (ACCA) is a group of over 4,000 air conditioning contractors who work together to improve our industry, promote good practices, and keep homes and buildings safe, clean and comfortable.
The Air-Conditioning, Heating and Refrigeration Institute (AHRI) is the trade association representing manufacturers of air conditioning, heating and commercial refrigeration equipment.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) advances the arts and sciences of heating, ventilation, air conditioning and refrigeration to serve humanity and promote a sustainable world.
The U.S. Green Building Council (USGBC) is a nonprofit membership organization of corporations, builders, universities, government agencies, and other nonprofit organizations dedicated to expanding green building practices and education, and its LEED® (Leadership in Energy and Environmental Design) Green Building Rating System™.
The Mechanical Contractors Association of America (MCAA) is a trade association established to represent approximately 2,300 mechanical, plumbing and services contractors.
SMACNA is the sheet metal and air conditioning contractors' national association. The website contains construction manuals, products and services, help finding expertise contractors.
The NSPE stands today as the only national organization committed to addressing the professional concerns of licensed PEs across all disciplines.