March 5, 2025

In commercial and industrial buildings, HVAC commissioning ensures systems operate efficiently, delivering consistent airflow and temperature control. Unlike traditional paper-based commissioning, technical commissioning involves in-depth testing, performance verification, and adjustments to meet project specifications.

What is HVAC Commissioning?

Commissioning HVAC systems involves inspecting, testing, and fine-tuning components to optimize energy efficiency, improve indoor air quality, and ensure compliance with industry standards.

Steps in the Commissioning Process:
  • Design Review: Ensuring HVAC systems align with building specifications and regulations.
  • Installation Verification: Ensuring correct equipment installation.
  • Functional Performance Testing: Measuring system efficiency and air balancing.
  • Ongoing Monitoring & Adjustments: Making changes based on performance data to optimize output.
Key Benefits of Technical Commissioning:
  • Enhanced Energy Efficiency: Properly commissioned systems reduce energy consumption and operational costs.
  • Improved Indoor Air Quality: Air balancing reduces contaminants and improves ventilation.
  • Compliance with Industry Standards: Independent testing ensures adherence to ASHRAE, NEBB, and AABC guidelines.
  • Reduced Maintenance Costs: Early issue identification prevents costly repairs.

SITA provides independent testing to ensure HVAC systems meet performance expectations. Our test and balance company follows AABC balancing procedures to optimize system operation.

Ensuring Indoor Comfort: The Role of Testing, Adjusting, and Balancing (TAB) in HVAC Systems

What is Testing, Adjusting, and Balancing (TAB)?

TAB ensures proper airflow, temperature consistency, and system efficiency in HVAC systems. Certified professionals conduct these procedures to verify that mechanical systems meet design intent.

The Importance of Air Balancing: Air balancing prevents temperature inconsistencies, improves comfort, and boosts energy efficiency. AABC balancing methods ensure uniform air distribution in commercial buildings.

Common Issues That Require TAB:
  • Inconsistent Room Temperatures: Some areas are too hot or cold due to airflow imbalances.
  • Excessive Energy Use: Inefficient systems work harder, increasing utility costs.
  • Poor Ventilation: Inadequate airflow causes humidity problems and poor indoor air quality.

Why Choose an Independent Tester? SITA specializes in independent testing to provide unbiased performance assessments. Our NEBB-certified team guarantees compliance with industry standards.

How Often Should TAB Be Performed?
  • During Initial Commissioning: Ensuring systems function correctly before the building is operational.
  • Annually: Regular testing maintains efficiency and identifies issues early.
  • After System Modifications: Changes in ductwork or mechanical components may require rebalancing.
Building Enclosure Commissioning: Enhancing Energy Efficiency and Performance

What is Building Enclosure Commissioning (BECx)?

Building Enclosure Commissioning (BECx) evaluates air barrier performance to ensure a structure’s energy efficiency and durability. This process includes air barrier testing and blower door certification to identify leaks and inefficiencies.

Why BECx Matters:

Reduces Energy Loss: Proper sealing prevents HVAC overuse and energy waste.

  • Ensures Regulatory Compliance: Many states require blower door test standards for new constructions.
  • Ensures Regulatory Compliance: Many states require blower door test standards for new constructions
  • Improves Indoor Air Quality: Eliminates drafts and moisture issues affecting occupant health.
  • Extends Building Lifespan: Prevents structural damage from moisture infiltration.
Key Elements of Air Barrier Testing:
  • Blower Door Testing: Measures airtightness to identify leakage points.
  • Infrared Thermography: Detects insulation gaps and leaks.
  • Pressure Differentials: Ensures proper pressure balance to avoid unwanted airflow.

SITA’s Expertise in Building Testing We provide air barrier testing to help contractors meet regulatory requirements and improve building performance.