The U.S. Department of Labor has issued a memo mandating prevailing wages for technicians conducting testing, adjusting and balancing (TAB) work on Davis-Bacon Act projects.
The duct system plays a pivotal role in customer comfort so HVAC technicians should be familiarized with air balance testing principles to get to the heart of the issues.
With multiple control options, construction options and valve package configurations, the ESV-VP has the flexibility to serve a range of applications and project requirements.
NADCA has inducted two professionals into the prestigious NADCA Hall of Fame during its 35th Annual Meeting and Exposition, held in March in Las Vegas.
Technical standards and manuals developed by SMACNA members have worldwide acceptance by the construction and code community, as well as local and national government agencies.
Fiberglass produced on rotary equipment, with a less consistent distribution of fibers, is better suited for thicker insulation; whereas fiberglass produced from the flame-attenuated pot and marble method is more consistent.