A TAB report is the formal documentation of airflow measurements, temperature readings, and adjustments made during the test and balance process, serving as a permanent record of system performance. This report verifies HVAC system compliance with design specifications and provides baseline data for future troubleshooting. TAB reports are required by many building codes and mechanical specifications.
Technical Details
TAB reports include measured CFM at supply and return vents, design CFM values, percentage variance from design, damper positions, temperature readings at key points, and equipment operating parameters like compressor amperage and refrigerant pressures. Reports document static pressure measurements at supply plenums and return air ducts, filter pressure drop, and any adjustments made to achieve design airflow.
Practical Significance
TAB reports provide evidence of specification compliance for code inspections and building acceptance. Baseline measurements enable contractors to diagnose performance problems years later by comparing current readings to commissioning data. Reports document warranty protection and establish accountability for system performance during the initial service period.