Environmental Engineering Consultants
The Environmental Engineering Consultants (EEC) is based in East Tennessee, founded by Mr. Ernest (Ernie) E. Choat, P. E. EEC has been conducting hands on HVAC Design, Testing and Balancing (TAB) Classes for more than 30 years.
The Testing, Adjusting and Balancing Bureau
The Testing, Adjusting and Balancing Bureau (TABB) is an organization committed to the welfare of the general public, engineers, building owners and design professionals to assure that all building environmental systems are installed properly and all systems are adjusted to these design specifications.
National Environmental Balancing Bureau
The National Environmental Balancing Bureau (NEBB) is a nonprofit organization, founded in 1971 by contractors in the heating, ventilating and air conditioning (HVAC) industry. NEBB exists to help architects, engineers, building owners, and contractors produce great buildings with HVAC systems that perform in ways they have been visualized and designed.
Associated Air Balancing Council
The Associated Air Balance Council (AABC) is a non-profit association of qualified, independent test and balance agencies. By the 1960s, the complexity of commercial Heating, Venting, and Air Conditioning (HVAC) systems exceeded the test and balance abilities of most HVAC contractors.