How much does home ventilation cost?
Home ventilation in Australia ranges from $150–$500 for an exhaust fan or roof vent installed to $2,500–$6,000 for a whole-home ducted system.
Typical price band
$1,500typical
standard job $800–$2.5k
$150 low$6,000 high
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Real-world examples
Exhaust fan or roof vent$150 – $500
Subfloor ventilation system$800 – $2,500
Whole-home ducted system$2,500 – $6,000
What affects the price
— System type. A single fan or passive vent costs a fraction of a ducted multi-room system.
— Number of rooms & outlets. Each extra room adds ducting, an outlet and installation time.
— Ducting runs & roof access. Long duct runs and tight roof or subfloor spaces slow the install.
— Wiring requirements. Fans and systems on new circuits need a licensed electrician's time.
— House construction. Two-storey homes and flat or metal roofs complicate venting to the outside.
Tips before you post
— Exhaust fans must duct to outside air — venting into the roof cavity just moves the moisture problem.
— Any hard-wired fan or system must be installed by a licensed electrician.
— Fix the moisture source (leaks, drainage) before paying for ventilation to manage the symptom.
Beyond the price: Home ventilation: fixing damp, mould and roof-space heat
Read the guide →Find ventilation near you
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Indicative range only, not a quote. Get quotes from local tradies for an exact price. Last updated 13 July 2026.
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