
Sick Building Syndrome: The ROI of Duct Hygiene
Read Guide
Stop choking your air conditioning. We remove mould, dust, and biofilm from industrial HVAC systems to reduce energy costs by up to 20% and improve indoor air quality.
Dirty ducts do more than just circulate dust—they burn through your budget and risk occupant health.
A 15% restriction in airflow from dust buildup can reduce heat transfer efficiency by up to 25%, forcing your chillers to work harder.
We deeply clean AHU coils and duct/diffusers to restore factory-spec static pressure, often reducing HVAC energy consumption by over 15% immediately.
Complaints of headaches, fatigue, or allergies from staff. Visible mould spores on vents or strange odours in the office.
We fog and sanitise the entire system with Australian-certified biocides, killing mould at the source and preventing regrowth for up to 12 months.
Grease or lint buildup in extraction ducts is a primary fire hazard. Many insurance policies are void if you can't prove regular cleaning.
You get a photographic report and a Certificate of Compliance after every clean, satisfying insurance requirements and fire safety regulations.
Over time, commercial ventilation systems accumulate substantial amounts of dust, pollen, mould spores, and bacteria. This not only degrades Indoor Air Quality (IAQ) leading to "Sick Building Syndrome" but also significantly reduces the energy efficiency of your plant.
ProSan Australia provides comprehensive remediation of AHUs (Air Handling Units), supply/return ductwork, and exhaust systems, verified with **Before & After photographic reporting**.
Clean coils transfer heat better, lowering power bills.
Reduce allergens and airborne pathogens in the office.
ROI Calculation
See how much a 1mm layer of dust on your coils is costing you in electricity.
Read the ReportMechanical brush and vacuum removal of contaminants from supply/return air ducts.
Chemical cleaning of evaporator and condenser coils to restore heat transfer efficiency.
Degreasing of kitchen and toilet exhaust systems to reduce fire hazards.
Supply and installation of HEPA, pocket, and panel filters.
Fogging of ductwork with anti-microbial solutions to kill mould and bacteria.
Detailed breakdown of work carried out, including micron readings and photos.
From hospitals requiring the strictest IAQ standards to factories with heavy particulate loads, we tailor our approach to your environment.
HACCP-compliant cleaning of production area ventilation
Improve staff wellbeing and reduce sick days
Critical IAQ for vulnerable populations
Odour control and guest comfort
Heavy particulate and oil mist extraction
Precision cooling system maintenance
Healthier learning environments for students
Compliance with public sector standards
We don't just clean—we document everything to ensure you meet your compliance obligations. Our work aligns with key Australian regulatory frameworks:
Guideline for HVAC hygiene, inspections and cleaning schedules
Maintenance of fire protection systems (grease duct cleaning)
Indoor air quality obligations for PCBUs under Work Health & Safety laws
International best practice for assessment, cleaning and restoration
A systematic approach to ensure nothing is missed and your system performs at its best.
Borescope camera inspection of duct interiors to assess contamination level
Safe isolation of AHUs and relevant zones before commencing work
Rotary brush and HEPA vacuum removal of debris from all duct runs
Chemical treatment of coils, drain pans, and fan assemblies
Anti-microbial fogging, final inspection, and documentation
AIRAH DA27 recommends visual inspection annually. For most commercial buildings, a full clean every 3-5 years is typical. Food processing and healthcare environments may require a 1-2 year cycle due to stricter hygiene requirements.
We work around your schedule. Most HVAC cleaning is done after-hours or on weekends. We isolate zones individually so other parts of the building can remain operational during the clean.
Yes. Every clean includes a Certificate of Compliance with before/after photos, ready to provide to your insurer or auditor on request.
Kitchen exhaust cleaning follows AS 1851 fire safety standards. We chemically degrease the entire system from hood to fan, ensuring fire risks are eliminated and you meet your insurance obligations.
Absolutely. Studies show that just 1mm of dust on coils can reduce efficiency by 20%. Clogged filters force fans to work harder. After a professional clean, many clients see immediate reductions in HVAC running costs.
Book a free borescope inspection to see the true state of your ductwork. We'll provide a no-obligation quote and recommended cleaning schedule.