Executive Committee


The SMACNA Executive Committee is the association’s policy and steering body, responsible for all long-term planning, financial budgets, investments, policy positions, and statements.

Executive Committee

Al LaBella, President

Al LaBella is SMACNA’s President (2021-2022) and Owner and President of Blue Diamond Air Systems in Medford, NY. 

LaBella started working at Blue Diamond Air Systems in 2001 after a career in education where he was a High School Football and Lacrosse coach. In 2008, Al and his wife Meghan purchased the family-run company from Meghan’s parents, Bob and Jean Lawless. Bob Lawless got LaBella involved in SMACNA to further his knowledge in the trade and LaBella went on to attend every SMACNA educational program offered including BMU, Financial Boot Camp, and Supervisor Training to name a few.

Executive Committee

Carol Duncan, Secretary-Treasurer

Carol Duncan is SMACNA’s Secretary-Treasurer and CEO and Owner of General Sheet Metal in Clackamas, Oregon. With nearly 40 years of leadership and expertise in the sheet metal industry, Duncan has helped grow the company from 25 employees to more than 180 since becoming CEO in 2000—building a positive corporate culture and keeping both employees and clients happy. General Sheet Metal specializes in mechanical, architectural and HVAC fabrication, installation and repair services for the commercial and industrial markets.

Executive Committee

Tom Martin, Vice President

Tom Martin is SMACNA’s Vice President (2021-2022) and President of T.H. Martin, Inc., a full-service mechanical contractor based in Cleveland, Ohio.  Martin is an industry innovator and highly regarded member of SMACNA-Cleveland, which represents more than 60 contractor firms in northeast Ohio. He has served as the chapter’s president since 2014.

Executive Committee

Angie Simon, Immediate Past President

Angie Simon is SMACNA’s Immediate Past President and CEO of Western Allied Mechanical in Menlo Park, California. Simon has risen through the ranks at Western Allied Mechanical, starting as a project manager in 1987.Under her guidance and leadership, the company has grown its annual revenue from $60 million to more than $100 million. She is applauded as a trailblazer and visionary for her passion to retain and recruit a more diverse workforce, both at Western Allied Mechanical and across the industry.

SMACNA Staff and Executive Committee

Aaron Hilger, CEO

Aaron Hilger is SMACNA’s Chief Executive Officer. He assumed the role in January, 2022 after a long career leading the Builders Exchange of Rochester as their President & CEO.  At Builders Exchange he managed 13 local and state wide trade associations, including the Construction Industry Association of Rochester, Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) Rochester, the Roofers Industry Fund and New York State SMACNA.