The Testing,
Adjusting, and Balancing (TAB) phase of any building construction or
renovation is intended to verify that all HVAC water and air flows
and pressures meet the design intent and equipment manufacturer's
operating requirements. It is rare to find an HVAC system of any
size that will perform completely satisfactorily without the benefit
of final adjustments. This is why it is considered a "best practice"
for the designer to specify that TAB work be part of the overall
HVAC system installation.
TAB represents the final component for helping an HVAC system to
live up to its green design intent. A well executed TAB process
ensures that air and water flows and pressures are correct and
establishes reliable air and water flow data for the HVAC system.
TAB epitomizes the single most integral part of a building truly
being healthy inside as well as providing maximum occupant comfort
at the lowest energy cost possible.