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Air Conditioning Contractors of America (ACCA)

ACCA is a national trade association that represents heating, ventilation, air conditioning, and refrigeration (HVACR) contractors - companies that design, install, maintain, and service residential, commercial, industrial, institutional, and governmental HVACR systems.

Air-Conditioning, Heating, and Refrigeration Institute (AHRI)

AHRI is a voluntary, nonprofit organization comprised of the manufacturers of air conditioning, refrigeration, and heating products. It publishes technical standards and certifies performance ratings of industry products.

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)

ASHRAE is an international organization that conducts research, writes standards, and provides continuing education.

International Institute of Refrigeration (IIR)

IIR studies scientific and technical problems relating to refrigeration and the development of the uses of refrigeration to improve peoples’ living conditions.

National Association of Plumbing-Heating-Cooling Contractors (NAPHCC)

NAPHCC is dedicated to the promotion, advancement, education, and training of the industry to protect the environment and the health, comfort, and safety of society.

Refrigeration Service Engineers Society (RSES)

RSES is a not-for-profit international association whose main mission is to provide training and education on the installation, service, and repair of HVACR