Product Overview

Summary: This SOP sets out a clear, step‑by‑step process for safely cleaning and maintaining air filtration devices in Australian workplaces. It helps control airborne contaminants, supports WHS compliance, and ensures your filtration equipment performs effectively to protect workers’ health and building occupants.

Effective air filtration is a critical control measure in many Australian workplaces, particularly where dusts, fumes, biological contaminants or other airborne pollutants are present. However, poorly cleaned or maintained air filtration devices can quickly become ineffective, posing health risks to workers and building occupants, breaching WHS obligations, and undermining other control measures in your risk management system. This Air Filtration Device Cleaning Safe Operating Procedure provides a structured, repeatable method for safely cleaning, inspecting and returning air filtration units to service, whether they are portable HEPA units, fixed HVAC filters, negative pressure units or local exhaust ventilation systems.

The SOP guides workers through preparation, isolation, safe removal and handling of filters and pre-filters, cleaning of housings and components, and correct reassembly and testing. It emphasises the control of airborne contaminants during cleaning, appropriate PPE selection, safe waste handling and disposal, and documentation to support compliance with Australian WHS legislation and relevant standards. By implementing this procedure, organisations can reduce exposure to harmful particulates and biological agents, extend the life of their equipment, and demonstrate due diligence during audits, inspections and incident investigations.

Key Benefits

• Reduce worker exposure to hazardous airborne contaminants during filter change-out and cleaning activities.
• Ensure consistent, best-practice cleaning methods that align with Australian WHS duties and relevant standards.
• Extend the operational life and performance of air filtration devices through systematic inspection and maintenance.
• Support infection prevention and indoor air quality objectives in healthcare, aged care, laboratory and office environments.
• Provide clear, trainable instructions that improve competency, reduce errors and support contractor management.

Who is this for?

• WHS Managers
• Facility Managers
• Maintenance Supervisors
• HVAC Technicians
• Laboratory Managers
• Infection Prevention and Control Coordinators
• Manufacturing Plant Managers
• Aged Care Facility Managers
• Hospital Engineering Services Staff
• Cleanroom Supervisors

Hazards Addressed

• Inhalation of hazardous airborne contaminants released during filter removal and cleaning
• Exposure to biological agents such as mould spores, bacteria and viruses trapped in filters
• Contact with accumulated dusts, allergens or chemical residues on filter media and housings
• Manual handling injuries when lifting or moving heavy or awkward filtration units and filter cartridges
• Eye and skin irritation from particulate matter and cleaning chemicals
• Electrical hazards when working near powered air handling or filtration equipment
• Slip, trip and fall risks associated with working at height or in plant rooms and confined service spaces
• Improper disposal of contaminated filters and waste leading to secondary exposure or environmental contamination

Included Sections

• 1.0 Purpose and Scope
• 2.0 References and Applicable Standards
• 3.0 Definitions and Types of Air Filtration Devices
• 4.0 Roles and Responsibilities
• 5.0 Required Competencies and Training
• 6.0 Required Tools, Materials and PPE
• 7.0 Pre-Task Planning and Risk Assessment
• 8.0 Isolation, Lock-Out and Equipment Shutdown
• 9.0 Safe Access, Work Area Setup and Containment
• 10.0 Filter Removal and Handling Procedure
• 11.0 Cleaning of Housings, Ducts and Components
• 12.0 Inspection, Replacement Criteria and Defect Reporting
• 13.0 Reassembly, Restart and Functional Verification
• 14.0 Waste Management and Disposal of Contaminated Filters
• 15.0 Emergency Procedures and Incident Response
• 16.0 Housekeeping and Restoration of Work Area
• 17.0 Documentation, Records and Maintenance Logs
• 18.0 Review, Audit and Continuous Improvement

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: How to Manage Work Health and Safety Risks
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• AS 1668.2: The use of ventilation and air conditioning in buildings – Mechanical ventilation in buildings
• AS 1851: Routine service of fire protection systems and equipment (for relevant smoke control/pressurisation interfaces)
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 4801: Occupational health and safety management systems (superseded but still referenced in many systems)
• Relevant state and territory healthcare or infection prevention guidelines for HVAC and air filtration (e.g. for hospitals and aged care)