SMACNA Endorsement Letter

Dear Construction Specifier:

The Sheet Metal and Air Conditioning Contractors National Association (SMACNA) encourages your support for referencing certification by the Testing Adjusting and Balancing Bureau (TABB) in project specifications for the testing and balancing of HVAC systems in new and retrofit construction. As you may know, TABB has earned ANAB accreditation for its HVAC TAB programs, becoming the only testing and balancing agency in the HVAC industry to qualify for this distinction. A decision to include TABB will result in direct benefits by expanding professional and accessible resources and by raising the execution level of HVAC Testing, Adjusting and Balancing (TAB) contractors.

SMACNA endorses TABB’s procedures which include a strict code of conduct for technicians performing hands-on TAB work. That procedure also provides for an 11-hour technician’s examination.

TABB’s certification program is administered by an International Certification Board,

headquartered in Fairfax, Virginia, and all certifications are performed on a national basis.  This open national procedure insures consistency and quality in application which is often lost in locally based and administered programs.

SMACNA supports TABB’s national effort to raise the bar for TAB contractors, especially with

TABB certified firms now firmly established in many major market areas. With its ANAB accreditation, TABB has elevated performance expectations throughout the industry.

SMACNA recommends including TABB in Specification Section 15990 or the new CSI Division

23 05 93. You can obtain a TABB model specification at

To obtain more information from TABB, you can contact them at (800) 458-6525 or at

Jack Knox
SMACNA President