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Roof & Duct Fans NZ

Inline fans, duct fans and roof fans for bathroom, laundry, kitchen and light commercial extraction, from Manrose, Fantech, Vynco and Vents. Choose a complete kit with ducting and grilles for single-room installs, or a standalone fan for a custom duct run.

Choosing an inline extractor fan or roof fan

Select by duct length, number of bends and outlet position, then confirm airflow.

Axial inline fans

High airflow at low resistance, suited to short, straight runs from a single room. EC axial models hold performance over longer duct lengths and draw less power than standard AC motors. For long runs with several bends, choose mixed flow.

Mixed flow inline extractor fans

Built to produce higher working pressures, for long runs, several bends or extraction from more than one room.

Silent inline fans

Lower-noise models for ensuites, bedrooms and offices.

Roof fans

Roof extract kits combine the fan with an aluminium cowl for a vertical discharge where there's no wall or soffit outlet. Downflow roof exhaust units and ring plate axial fans cover larger commercial volumes, alongside our commercial extract range.

Roof and duct fan FAQs

Which duct fan suits a long run or two bathrooms?

A mixed flow inline fan, as it holds airflow against higher static pressure than an axial fan of the same diameter. Use a Y-piece and the largest practical duct size, and confirm airflow at the design pressure on the manufacturer's fan curve.

Will an inline fan meet Healthy Homes ventilation requirements for rentals?

Under the Healthy Homes Standards, as of 1 July 2019, new fans installed in bathrooms need a minimum diameter of 120mm (including ducting) or an exhaust capacity of at least 25 L/s, and kitchens 150mm or 50 L/s, venting to the outside. Size the fan and duct together, as a 150mm fan reduced to 100mm duct will not meet the diameter requirement.

Should I buy a fan kit or separate components?

Kits pair the fan with duct, grilles and fittings sized to suit, which simplifies ordering for a standard single-room install. For longer runs or non-standard outlets, buy the fan separately and select duct from AC duct and fittings and grilles, cowls and backdraft shutters from ventilation accessories.

Do I need an electrician to install a roof fan or inline extractor fan?

Connecting a hardwired fan is prescribed electrical work and should be carried out by a registered, licensed electrical worker. For whole-home airflow rather than single-room extraction, see our ventilation systems.