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

$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

— 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 licenced electrician's time.

— House construction. Two-storey homes and flat or metal roofs complicate venting to the outside.

— 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 licenced electrician.

— Fix the moisture source (leaks, drainage) before paying for ventilation to manage the symptom.

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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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