Need an exhaust fan installed, replaced, or repaired? Moonlight Electrical supplies and fits exhaust fans for bathrooms, kitchens, laundries, and utility rooms across Sydney. We handle everything from basic ceiling-mounted fans through to ducted inline systems and 3-in-1 heat/light/exhaust units. All exhaust fan installations are fully compliant with the National Construction Code, properly ducted where required, and backed by our 7-year warranty. We quote per job, not per hour, so you know the cost before we start.
Moonlight Electrical holds NSW Contractor Licence 373818C. We’re fully insured, Beacon Preferred Electricians, and all workmanship comes with our Lifetime Labour Guarantee.
Exhaust Fan Services We Provide
Which Exhaust Fan Do You Need?
Choosing the right exhaust fan depends on the room size, whether you have existing ducting, and what features you want.
| Fan Type | Best For | Ducting Required? | Noise Level | Features |
|---|---|---|---|---|
| Ceiling-mounted (standard) | Small–medium bathrooms with roof access | Recommended (can vent to eaves) | Moderate | Basic, affordable |
| Inline ducted | Bathrooms far from external wall/roof, long duct runs | Yes (part of the system) | Quiet (motor is remote from the room) | Ideal for noise-sensitive installs |
| Wall-mounted | Rooms with an external wall, laundries, garages | No (vents directly through wall) | Moderate | Simple, no ceiling work |
| 3-in-1 (heat/light/exhaust) | Bathrooms needing heating and ventilation | Recommended | Varies | IXL Tastic, Clipsal Airflow — all-in-one solution |
| Window-mounted | Kitchens, older bathrooms with window access | No | Can be noisy | Budget option, no ceiling work |
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Why our customers choose us…
Frequently Asked Questions
Do I need an electrician to install an exhaust fan?
Yes. In Australia, any electrical work, including hardwiring an exhaust fan, must be carried out by a licensed electrician. This applies to new installations, replacements, and even swapping a fan for a different model if it involves any wiring changes. Plug-in fans don’t require an electrician, but hardwired ceiling and wall fans do.
How much does exhaust fan installation cost?
A standard bathroom exhaust fan installation typically costs between $200 and $400, depending on whether ducting is required and how accessible the ceiling cavity is. A 3-in-1 unit (heat lamp, light, and exhaust) generally costs $350–$600 installed. Ducted inline systems requiring longer duct runs may cost $500–$800+. We provide a fixed-price quote before any work begins, so there are no surprises.
Should an exhaust fan be ducted to outside or into the roof space?
Ideally, to the outside. The NCC 2022 requires exhaust systems in new builds to discharge directly or via a duct to the outdoors. Venting into the roof space pushes warm, moist air into your ceiling insulation and timber framing, which can cause condensation, mould growth, and long-term structural damage. For existing homes, we can retrofit ducting from your current fan through the eaves, soffit, or roof to vent externally.
My exhaust fan is noisy — should I repair or replace it?
In most cases, replacement is the better option. A noisy exhaust fan usually means worn bearings or a failing motor. Modern fans are significantly quieter, more energy-efficient, and often have higher extraction rates. We can install a new fan in the existing cut-out in most cases, keeping the job quick and cost-effective.
What size exhaust fan do I need for my bathroom?
As a general rule, your exhaust fan should extract at least 25 litres per second (25L/s) for a standard bathroom. For larger bathrooms or those with a spa bath, you may need a higher-capacity fan. We’ll assess your room size and recommend the right capacity to ensure effective moisture removal.
Do you install exhaust fans with timers?
Yes. For bathrooms without a window, the NCC requires the exhaust fan to be interlocked with the light switch and include a run-on timer that keeps the fan running for at least 10 minutes after the light is turned off. We install compliant timer systems as standard for windowless bathrooms, and can add timers to any exhaust fan installation on request.
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