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  2. Section 608 - Wikipedia

    en.wikipedia.org/wiki/Section_608

    Section 608 (together with Section 609, which covers motor vehicles) of the Clean Air Act serves as the main form of occupational licensure for technicians in the heating, ventilation, and air conditioning (HVAC) industry in the United States. [1]

  3. Professional licensure in the United States - Wikipedia

    en.wikipedia.org/wiki/Professional_licensure_in...

    Some states may require a written examination for a license, while others may require several years of field experience as a student or intern, or both. The requirements regarding who must be licensed may include uncommon or strange licenses; for example, four states require licensing for interior designers. [4]

  4. North American Board of Certified Energy Practitioners

    en.wikipedia.org/wiki/North_American_Board_of...

    The North American Board of Certified Energy Practitioners (NABCEP) is a nonprofit professional certification and accreditation organization that offers both individual and company accreditation programs for photovoltaic system installers, solar heat installers, technical sales, and other renewable energy professionals throughout North America. [1]

  5. Occupational licensing - Wikipedia

    en.wikipedia.org/wiki/Occupational_licensing

    (The dashed line shows the value from state estimates of licensing based on the Gallup Survey and PDII Survey results. The union membership estimates are from the Current Population Survey (CPS)). By 2008 occupational licensing in the U.S. had grown to 29 percent of the workforce, up from below five percent in the 1950s. [51]

  6. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The HVAC industry was historically regulated by the manufacturers of HVAC equipment, but regulating and standards organizations such as HARDI (Heating, Air-conditioning and Refrigeration Distributors International), ASHRAE, SMACNA, ACCA (Air Conditioning Contractors of America), Uniform Mechanical Code, International Mechanical Code, and AMCA ...

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  8. Sheet Metal and Air Conditioning Contractors' National ...

    en.wikipedia.org/wiki/Sheet_Metal_and_Air...

    The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members [1] in 103 chapters [2] throughout the United States, Canada, Australia and Brazil.

  9. ASHRAE - Wikipedia

    en.wikipedia.org/wiki/ASHRAE

    ASHRAE was founded in 1894 at a meeting of engineers in New York City, formerly headquartered at 345 East 47th Street, and has held an annual meeting since 1895. [4] Until 1954 it was known as the American Society of Heating and Ventilating Engineers (ASHVE); in that year it changed its name to the American Society of Heating and Air-Conditioning Engineers (ASHAE). [5]