The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) is an international trade association representing 1,834 member firms in 97 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, VA., which is outside of Washington, D.C., and on Capitol Hill.

SkillsUSA is a partnership of students, teachers, and industry working together to ensure a skilled American workforce. SkillsUSA is working to attract more students into construction, electrical, plumbing, HVAC and appliance repair programs.

Southern Air offers design, installation and service of heating, air conditioning, electrical, plumbing and piping systems for commercial and industrial facilities.

Southern Trust Home Services is a leading electrical, HVAC, and plumbing company serving southwest Virginia.

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.

The Testing, Adjusting and Balancing Bureau (TABB) is an organization made up of top heating, ventilating, air conditioning and refrigeration professionals. Since 1981, TABB has set the certification standards for the HVAC industry. TABB is the first and only HVAC testing, adjusting and balancing certification program accredited by the American National Standards Institute (ANSI).

Tri-Dim Filter provides innovative solutions in air filtration and indoor air quality for over 50 years. Tri-Dim Filter is committed to meeting the customer’s expectations and needs with innovative products and services designed to provide “value-in use”.

Virginia Air Distributors, Inc is one of the largest wholesale distributors of residential and light commercial HVAC equipment on the east coast. Headquartered in Richmond, VA, Virginia Air provides heating, cooling, air conditioning equipment and solutions, heat pumps, and furnaces.