Air Duct Cleaning and Sick Building Syndrome

Sick building syndrome describes building-linked health or comfort complaints where no specific illness or cause has been identified. It should not be used as a diagnosis that dirty ducts are the cause.
What the term means
The US EPA’s 1991 factsheet distinguishes sick building syndrome from building-related illness, where a specific illness and cause can be identified. Its guidance discusses ventilation, pollutant sources and building operation—not duct cleaning as a universal remedy.
Document patterns before choosing a response
Note the rooms affected, timing, occupancy and any changes in cleaning products or maintenance. People with health concerns should seek medical advice; facilities teams can investigate the building conditions separately.
Consider more than the ductwork
Outdoor-air delivery, moisture, building materials, equipment condition and activities can all matter. Inspect filters, coils, drains and accessible ducts as part of the agreed assessment rather than assuming one component explains every complaint.
Where cleaning fits
Commercial duct cleaning can remove deposits within the agreed scope. It does not guarantee symptom relief, eliminate every allergen or establish that a building is free of mould.
Test for a defined concern
Where needed, arrange indoor air quality assessment with a suitable sampling plan. Record the findings and any access limitations, and review whether repairs or ventilation changes are needed.
Arrange a commercial service
Clean Air Filtration provides commercial HVAC duct cleaning in Melbourne and Victoria. Tell us your site location, system details, access restrictions and operating hours so we can discuss the cleaning scope. Call (03) 9303 9661 or email sales@cleanair.com.au.
Every client receives a client portal, including one-off services. Completed-service PDF reports and job photos are available there. See our service records guide for what to keep with your maintenance history.
Cover image: AI-generated editorial illustration of representative equipment or premises, not a client-site photograph.