Testing Adjusting & Balancing Services

Today's HVAC systems are being designed with many more independently controlled temperature zones to advance occupant comfort. Variable speed fans and pumps are becoming more commonplace to provide the exact quantity of heating and cooling system capacity, in a manner that minimizes overall energy usage. Fresh occupant air ventilation codes are much more restrictive and at the same time building envelopes are becoming much tighter. The combination of constantly changing HVAC airflow rates and increased demand for fresh- and filtered-ventilation air for all occupants is placing more emphasis on fine-tuning HVAC system operation.

Testing, adjusting, and balancing (TAB) is the process of checking and adjusting all environmental systems in a building to produce the design objectives. This process includes:

Balancing air and water distribution systems
Adjusting the total system to provide design quantities
Electrical measurement
Establishing quantitative performance of all equipment
Verifying automatic control system operation and sequences of operation
Sound and vibration measurement

The purpose of testing, adjusting, and balancing (TAB) is to assure that an HVAC system is providing maximum occupant comfort at the lowest energy cost possible.