Product Overview

Summary: This HVAC System Maintenance Safe Operating Procedure sets out a clear, repeatable process for safely inspecting, servicing and maintaining heating, ventilation and air conditioning systems in Australian workplaces. It helps organisations control WHS risks, protect indoor air quality, and keep critical building services reliable and compliant with relevant Australian Standards.

HVAC systems are essential to providing safe, comfortable and healthy workplaces, yet poorly maintained systems can quickly become a significant WHS and compliance risk. This HVAC System Maintenance Safe Operating Procedure provides a structured, step-by-step approach to planning and carrying out routine and reactive maintenance on air conditioning, ventilation and heating plant in line with Australian expectations and regulatory duties. It covers everything from pre-start checks and isolation procedures through to filter changes, coil cleaning, fan and belt inspection, verification of controls and safe return-to-service.

Developed for the Australian context, this SOP helps businesses demonstrate due diligence under WHS legislation by systematically managing hazards such as electrical energy, moving parts, working at height, confined spaces, hazardous substances (e.g. refrigerants and coil cleaners) and poor indoor air quality. It supports consistent maintenance across multiple sites, reduces unplanned breakdowns, and provides clear guidance for in-house maintenance teams and external contractors alike. By implementing this procedure, organisations can improve asset performance, extend equipment life, and provide a defensible record of safe HVAC maintenance practices for audits, tenders and regulatory inspections.

Key Benefits

• Ensure HVAC maintenance activities are carried out safely and consistently across all sites.
• Reduce the risk of electrical shock, falls, manual handling injuries and refrigerant exposure during maintenance tasks.
• Improve indoor air quality and thermal comfort, supporting worker health and productivity.
• Extend the life of HVAC assets and reduce costly unplanned downtime and emergency call-outs.
• Demonstrate compliance with Australian WHS legislation and relevant HVAC and refrigeration standards.

Who is this for?

• HVAC Technicians
• Maintenance Supervisors
• Facilities Managers
• Property Managers
• WHS Managers
• Building Services Engineers
• School and TAFE Facilities Coordinators
• Aged Care Maintenance Managers

Hazards Addressed

• Electrical shock and arc flash from live HVAC components and switchboards
• Contact with moving parts such as fans, belts and rotating shafts
• Falls from height when accessing rooftop plant or ceiling spaces
• Heat stress and exposure to hot surfaces on heating plant and pipework
• Exposure to refrigerants, including leaks, frostbite risk and asphyxiation in poorly ventilated areas
• Exposure to biological contaminants, mould and bacteria from dirty coils, filters and condensate trays
• Manual handling injuries from lifting filters, motors, ductwork components and access panels
• Slips, trips and falls around plant rooms, rooftops and wet areas near condensate drains
• Confined space risks when working in plant rooms, ceiling voids or ductwork with limited access
• Chemical exposure from cleaning agents, coil cleaners and disinfectants

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and System Overview
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Hazard Identification and Risk Assessment for HVAC Maintenance
• 6.0 Required Tools, Equipment and Personal Protective Equipment (PPE)
• 7.0 Pre-Start Checks and Isolation/Lockout-Tagout Procedures
• 8.0 Accessing Plant Rooms, Rooftops and Ceiling Spaces Safely
• 9.0 Routine Maintenance Tasks – Filters, Coils, Fans and Belts
• 10.0 Refrigeration System Inspection, Leak Checks and Handling of Refrigerants
• 11.0 Cleaning, Disinfection and Microbial Control Procedures
• 12.0 Verification of Controls, Sensors and Safety Interlocks
• 13.0 Recommissioning, Functional Testing and Return-to-Service
• 14.0 Indoor Air Quality Considerations and Occupant Communication
• 15.0 Emergency Procedures (Leaks, Electrical Faults, Structural Issues)
• 16.0 Waste Management and Environmental Considerations
• 17.0 Documentation, Maintenance Records and Reporting Requirements
• 18.0 Training, Induction and Contractor Management
• 19.0 Review, Audit and Continuous Improvement of the SOP

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS legislation
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory WHS regulations
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• AS 3666.1: Air-handling and water systems of buildings – Microbial control – Design, installation and commissioning
• AS 3666.2: Air-handling and water systems of buildings – Microbial control – Operation and maintenance
• AS/NZS 5149 (series): Refrigerating systems and heat pumps – Safety and environmental requirements
• AS/NZS 3000: Electrical installations (Wiring Rules)
• AS 1851: Routine service of fire protection systems and equipment (for interaction with smoke control and fire systems)
• State and territory Codes of Practice relating to Working at Heights and Confined Spaces