California Association of Sheet Metal and Air Conditioning Contractors, National Association (CAL SMACNA) is a non-profit trade association representing over 600 union sheet metal and air conditioning contractors who employ more than 25,000 men and women throughout the state of California .

These contractors perform commercial and residential heating, ventilating, and air conditioning; architectural and industrial sheet metal; as well as stainless kitchen equipment, manufacturing, testing and balancing, siding and decking. Our mission is to provide legislative and regulatory advocacy and program services. Our goal is to help unify the voice of our industry for the combined benefit of our companies, our employees, our communities and our industry.