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Test & Balance (Air Balance) Report

A Test & Balance (Air Balance) Report documents the testing, adjusting, and balancing of HVAC air systems to verify airflow matches design specifications. It records fan performance, outlet-by-outlet airflow readings, and whether the system is balanced within design tolerance, per NEBB/AABC/TABB test and balance procedures.

NEBB Procedural Standards / AABC National Standards / TABB, project mechanical specificationsValid: One-off (no expiry)

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Sample Air Balance Report certificate

Sample Test & Balance (Air Balance) Report certificate created with CertBox, showing the professional PDF layout with system and fan performance data, outlet-by-outlet design vs. actual airflow, external static pressure and motor current

Sample Air Balance Report with fictional data. All personal details shown are fake.

What it covers

  • System and fan performance data
  • Outlet-by-outlet design vs. actual airflow
  • External static pressure and motor current
  • Instrumentation used and calibration date
  • Balance result against design tolerance

Who needs a Air Balance Report?

HVAC contractors
Mechanical engineers
Building owners
Commissioning agents

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Frequently asked questions about Air Balance Report

What is test and balance (TAB)?
Test and balance is the process of measuring and adjusting an HVAC air system so that actual airflow at each outlet matches the design airflow, within an agreed tolerance (commonly ±10%). It verifies the system delivers the ventilation and comfort conditions it was designed for.
Who can perform a TAB report?
TAB work is typically performed by technicians certified through NEBB (National Environmental Balancing Bureau), AABC (Associated Air Balance Council), or TABB (Testing, Adjusting and Balancing Bureau) — three independent certifying bodies with their own procedural standards.

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