Bathroom Exhaust Fans Australia | Lamex Bathrooms & Kitchens

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Bathroom Heating

Bathroom Exhaust Fans for Fast, Effective Moisture Control

Round and square exhaust fans with standard or DC motors, with or without built-in LED lighting, sized for Australian bathrooms of any size.

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White square duct ceiling exhaust fan for bathrooms Comet DC round 295mm bathroom exhaust fan with high efficiency DC motor

Why choose bathroom exhaust fans from Lamex

  • Removes moisture and steam to protect paint, grout and cabinetry from mould
  • DC motor options run quieter and use less power than standard AC fans
  • Round and square duct outlets suit most existing ceiling openings
  • Models available with integrated tricolour LED lighting
  • Sized from small ensuites to larger family bathrooms
  • IP-rated options for safe use in wet zones under AS/NZS wiring rules

How to choose the right bathroom exhaust fan

Start with the size of your bathroom. Measure the length, width and ceiling height to work out the room volume, then pick a fan with an airflow rating (measured in litres per second, L/s) that comfortably clears that volume — Australian Standard AS1668.2 is the usual reference point for ventilation rates. A fan that's undersized will struggle to clear steam quickly, leaving windows fogged and grout damp long after a shower.

Next, decide between a ducted and non-ducted unit, and standard AC or DC motor. Ducted fans vent moist air outside and are the more effective long-term choice for stopping mould. DC motors are generally quieter and more energy efficient than AC equivalents, which matters if the fan will run for long periods or overnight. If you also need light in the space, look at combination fan-light units sized and IP-rated for the zone they'll sit in, and have a licensed electrician confirm ceiling clearances and duct routing before you buy.

Frequently asked questions

What size exhaust fan do I need for my bathroom?
As a general guide, Australian Standard AS1668.2 recommends around 15 air changes per hour for bathrooms. Multiply your bathroom's length, width and ceiling height in metres to get the room volume in cubic metres, then choose a fan rated in L/s that comfortably covers that volume. If you're unsure, a licensed electrician can confirm the right size for your room.
Do I need a ducted or non-ducted exhaust fan?
A ducted fan, vented outside through the roof or an external wall, removes moisture from the bathroom completely and is the better long-term option for controlling mould and mildew. Non-ducted fans recirculate air through a filter and are generally only suited to situations where ducting isn't possible.
Can I install an exhaust fan with a light in a shower zone?
Only if the unit carries an IP rating suitable for that wet zone under AS/NZS 3000 wiring rules. IP44 or higher is typically required close to a shower. Always have a licensed electrician confirm zone requirements and carry out the installation.
What's the difference between a standard motor and a DC motor exhaust fan?
DC motor fans typically run quieter, use less electricity and can offer more consistent airflow than standard AC motor fans, making them a good fit for bathrooms where the fan runs for extended periods.

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