About SMACNA

About the Sheet Metal and Air Conditioning Contractors’ National Association

The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) is an international trade association representing 3,500 signatory contracting firms with more than 100 chapters throughout the United States, Canada, Australia, and Brazil. A leader in promoting quality and excellence in the sheet metal and air conditioning industry, SMACNA has offices in Chantilly, Virginia, and in Washington, D.C.

OUR MISSIONTo create a competitive advantage for SMACNA members through industry education, labor relations, standards development, industry representation, and business studies.

WE SET THE STANDARDS FOR THE INDUSTRYSMACNA is well-known for its standards development work. SMACNA standards help contractors reduce costs, anticipate technical requirements, and increase productivity and efficiency.

The technical standards and manuals developed by SMACNA contractors are accepted across the globe by the construction community. ANSI, the American National Standards Institute, has accredited SMACNA as a standards-setting organization.
SMACNA standards and manuals address all facets of the sheet metal industry, from duct construction and installation to air pollution control, energy recovery, and roofing.