TAB & System Validation
Empirical Testing, Adjusting & Balancing (TAB) to prove system performance meets design specifications before facility handover.
Empirical Verification, Not Paper Sign-offs
A commissioned HVAC plant must prove its performance under actual thermal and fluid loads. Our commissioning engineers conduct field TAB protocols using calibrated anemometers, balometers, differential pressure manometers, and pitot tubes.
We adjust branch VCDs, balance chilled water flow rates through balancing valves, and verify room pressure hierarchies to ensure total compliance.
Validation Scope
- NIST-Calibrated Instrument Measurements
- Air Velocity & Volumetric Flow (CFM) Profiling
- Ductwork Static & Dynamic Pressure Profile
- Cleanroom Recovery Time Testing
- Airflow Pattern Visualization (Smoke Test)
- Complete As-Built Documentation & O&M Manuals
TAB & Validation Protocols
CFM & Velocity Measurements
Grille, diffuser, and branch duct CFM measurements to achieve designed air distribution.
Water Flow & Delta-T Check
Balancing GPM through chillers, cooling towers, and AHU cooling coils for optimal heat exchange.
As-Built Handover Dossier
Comprehensive validation report including motor current, static pressure, and air balance sheets.
Frequently Asked Questions
What is TAB validation in HVAC systems?
TAB stands for Testing, Adjusting & Balancing. It is the empirical process of measuring and balancing air volumetric flow (CFM), water flow (GPM), static pressures, and temperature differentials across all grilles, coils, and AHUs to match original engineering design specs.
What instruments are used during TAB testing?
Our commissioning engineers use NIST-calibrated digital balometers, thermal anemometers, pitot tube manometers, ultrasonic hydronic flowmeters, and PAO aerosol photometers (for HEPA filter integrity testing).
Do you provide formal validation documentation for regulatory audits?
Yes, we provide full DQ/IQ/OQ/PQ validation dossiers, airflow velocity balance sheets, pressure differential maps, HEPA filter leak test reports, and room air change (ACPH) certificates.
Need Independent TAB Validation for Handover?
Contact our commissioning engineers to schedule testing.