Product Overview

Summary: This Testing and Commissioning of Air Conditioning Units SOP sets out a clear, step-by-step method for safely bringing new or refurbished air conditioning systems into service. It helps your team verify performance, meet Australian WHS and compliance requirements, and prevent costly defects, call-backs, and safety incidents on site.

Testing and commissioning of air conditioning units is a critical phase where design intent, installation quality, and safe operation all converge. Done poorly, it can lead to equipment failure, indoor air quality issues, warranty disputes, and serious WHS concerns such as electrical hazards, refrigerant leaks, and unsafe access to plant. This SOP provides a structured, repeatable process for verifying that split systems, packaged units, and central plant equipment are installed correctly, tested methodically, and commissioned in line with Australian standards and manufacturer requirements.

Developed for the Australian construction and building services environment, the procedure walks your team through pre-start checks, lock-out/tag-out, pressure and leak testing, electrical verification, functional performance testing, and handover documentation. It clarifies who does what, when, and how, reducing ambiguity between contractors, consultants, and clients. By implementing this SOP, businesses can demonstrate due diligence under WHS legislation, improve system reliability and energy performance, and provide a professional, evidence-based commissioning record that stands up to audits, defects inspections, and future maintenance needs.

Key Benefits

• Ensure air conditioning units are tested and commissioned safely, in line with Australian WHS and technical standards.
• Reduce the risk of refrigerant leaks, electrical faults, and equipment damage during start-up and early operation.
• Standardise commissioning practices across projects, improving quality, consistency, and traceability of results.
• Streamline handover by clearly defining documentation, test records, and client sign-off requirements.
• Support future maintenance and troubleshooting with a clear, auditable commissioning history.

Who is this for?

• HVAC Technicians
• Refrigeration Mechanics
• Mechanical Services Contractors
• Commissioning Engineers
• Building Services Engineers
• Site Supervisors
• Construction Project Managers
• Facility and Asset Managers
• WHS Managers and Advisors
• Maintenance Supervisors

Hazards Addressed

• Electrical shock and arc flash during energisation and testing of units
• Exposure to refrigerants (including asphyxiation, frostbite, and environmental release)
• Falls from height when accessing rooftop or elevated plant and condensers
• Manual handling injuries when positioning or adjusting units and components
• Contact with hot or rotating components such as fans, belts, and compressors
• Noise exposure from running plant in enclosed or reverberant plant rooms
• Slip, trip, and fall hazards around condensate, tools, and temporary leads
• Confined space risks in plant rooms or ceiling spaces with poor ventilation
• Pressurisation hazards during pressure and leak testing of pipework
• Fire and ignition risks when working near electrical switchboards or hot surfaces

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations
• 3.0 Applicable Legislation, Standards and References
• 4.0 Roles and Responsibilities (Technicians, Supervisors, WHS, Client Representatives)
• 5.0 Competency, Licensing and Training Requirements
• 6.0 Required Tools, Test Instruments and Commissioning Equipment
• 7.0 Personal Protective Equipment (PPE) Requirements
• 8.0 Pre-Commissioning Checks (Installation Verification and Documentation Review)
• 9.0 Hazard Identification and Risk Controls (Electrical, Refrigerant, Access, Manual Handling)
• 10.0 Lock-Out/Tag-Out and Isolation Procedures
• 11.0 Refrigerant System Pressure and Leak Testing Procedure
• 12.0 Electrical Safety Checks and Verification Tests
• 13.0 Initial Start-Up Procedure for Air Conditioning Units
• 14.0 Functional Performance Testing (Cooling/Heating, Controls, Safeties, Airflow)
• 15.0 System Balancing and Setpoint Adjustment
• 16.0 Verification of Indoor Air Quality and Condensate Management
• 17.0 Fault-Finding and Rectification During Commissioning
• 18.0 Environmental and Waste Management (Refrigerant Handling and Disposal)
• 19.0 Documentation, Test Sheets and Commissioning Reports
• 20.0 Client Demonstration, Training and Handover Requirements
• 21.0 Emergency Procedures and Incident Reporting
• 22.0 Review, Continuous Improvement and Revision History

Legislation & References

• Work Health and Safety Act 2011 (Cth) and corresponding state and territory WHS legislation
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory regulations
• Safe Work Australia – Code of Practice: Managing Electrical Risks in the Workplace
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• AS/NZS 5149: Refrigerating systems and heat pumps – Safety and environmental requirements
• AS/NZS 3000: Electrical installations (Australian/New Zealand Wiring Rules)
• AS 1668.2: The use of ventilation and air conditioning in buildings – Mechanical ventilation in buildings
• AS/NZS 3666 series: Air-handling and water systems of buildings – Microbial control
• NCC (National Construction Code) – Mechanical services and ventilation provisions
• Manufacturer installation and commissioning instructions for specific air conditioning units