The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA), the leader in promoting quality and excellence in the sheet metal and air conditioning industry, recently announced Carol Duncan, CEO and Owner of General Sheet Metal, has been elected by the Board of Directors to serve as president. Duncan’s year-long term in office begins at the close of SMACNA’s 79th Annual Convention in Phoenix.  

Duncan began her career in the sheet metal industry in 1982 at General Sheet Metal, a Clackamas, Oregon-based company specializing in mechanical, architectural and HVAC fabrication, installation and repair services for the commercial and industrial markets. Duncan’s leadership and expertise in the sheet metal industry has allowed her to rise through the ranks, becoming the company’s CEO in 2000. Since then, she has helped grow the company from 25 employees to more than 180 – building a positive corporate culture and keeping both employees and clients happy. 

One of Duncan’s proudest professional achievements was her work advocating for issues that affect the industry. She has been active on the national legislative front for over 25 years, serving as the Political Action Committee (PAC) Chair and Legislative Chair.  

“Carol is an essential member of the SMACNA Executive Committee, and I am excited to see her take on the role as our next board president,” said Aaron Hilger, SMACNA’s Chief Executive Officer. “Carol’s extensive industry expertise and dedication to our association and its members will provide a solid foundation as we strive to further our organization’s mission.” 

An active member of SMACNA both nationally and locally, Duncan has served in many roles and committees, including Products & Programs Coordinating Committee and SMACNA/SMART Best Practices Market Expansion Task Force. Locally, Duncan has been heavily involved in her local chapter, SMACNA Oregon & Southwest Washington. 

In her new role as president, Duncan will be focused on the BE4ALL initiative, a joint effort of SMACNA, SMART, and the International Training Institute (iTi), to positively impact the industry’s work culture and meet the real-world demand for the best, and most qualified workforce available. 


SMACNA is an international trade association representing 3,500 contributing contractor firms and is a leader in promoting quality and excellence in the sheet metal and air conditioning industry. SMACNA members are responsible for effectively delivering the clean air Americans breathe in offices, homes, and hospitals; for many of the attractive facades you see on today’s stadiums and office buildings; and for the comfortable, healthy, and safe living environments in which our citizens live out their daily lives. SMACNA has national offices in Chantilly, Va., outside of Washington, D.C., and on Capitol Hill. For more information, visit