| American Society of Heating, Refrigerating and Air-Conditioning Engineers(ASHRAE) - ASHRAE fulfills its mission of advancing heating, ventilation, air conditioning and refrigeration to serve humanity and promote a sustainable world through research, standards writing, publishing and continuing education. |
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| Sheet Metal and Air Conditioning Contractors National Association - SMACNA members perform work in industrial, commercial, institutional and residential markets. They specialize in heating, ventilating and air conditioning; architectural sheet metal; industrial sheet metal; kitchen equipment; specialty stainless steel work; manufacturing; siding and decking; testing and balancing; service; and energy management and maintenance. |
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| Testing Adjusting and Balancing Bureau - is an organization made up of heating, ventilation and air conditioning (HVAC) industry professionals |
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| Sheet Metal, Air Conditioning and Roofing Trade Association (SMARTA) |
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| Association of Facilities Engineering(AFE) - AFE provides education, certification, technical information and other relevant resources for plant and facility engineering, operations and maintenance professionals worldwide. |
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| National Association of Women in Construction(NAWIC) - NAWIC's core purpose is to enhance the success of women in the construction industry. |
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| Northern Illinois Building Contractors Association - The voice of the construction industry in northwestern Illinois. |
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| Northern Illinois Subcontractors Association (NISA) |
