Manrose Timer Extractor Fan 4″/100mm

The Manrose Timer Extractor Fan (100mm/4″) is a high-performance axial fan designed to improve ventilation and reduce condensation in domestic bathrooms, toilets, and utility rooms. This model is equipped with an integrated adjustable overrun timer, allowing the fan to continue running for a pre-set duration (typically 1–20 minutes) after the switch is turned off, ensuring thorough extraction of moisture and stale air.

The fan is suitable for wall or ceiling mounting, making it a flexible solution for a wide range of residential applications. With a discreet and compact design, it blends easily into most interiors while offering reliable, quiet operation.

Key Features

Integrated Overrun Timer: Adjustable run-on time allows the fan to continue extracting air after the main light or switch is turned off.
High Extraction Performance: Moves up to 85 cubic metres per hour (23 litres per second) of air, helping prevent condensation and mould build-up.
Quiet Operation: Operates at just 41 decibels, providing effective ventilation with minimal noise disruption.
Dual Mounting Options: Designed for both wall and ceiling installation, depending on the layout of your room.
Compact 4″ Design: Standard 100mm fan diameter is compatible with most domestic ventilation systems and ducting.
Axial Technology: Provides excellent airflow over short duct runs; ideal for external walls or through-ceiling applications with minimal bends.
Low Power Consumption: Energy-efficient operation that complies with modern building regulations.

Typical Applications

Bathrooms
Toilets/WCs
Utility rooms
En-suites
Kitchens (secondary extraction or where permissible)

Installation Notes

This fan must be connected to a switched live input to activate the timer function.
Ideal for connection to a lighting circuit to trigger automatic operation.
Compatible with 100mm ducting and standard gravity or fixed grilles (available separately).
Complies with current Building Regulations (Part F – Ventilation) when installed correctly.

What’s in the Box

Manrose 100mm Timer Extractor Fan
Fixing kit
Installation instructions

Please note: Ducting and external grilles are not included and must be purchased separately if required.

Frequently Asked Questions (FAQ)

Q: How long does the timer run after I turn off the switch?
A: The overrun timer is adjustable between approximately 1 and 20 minutes.

Q: Can I install this fan in a shower enclosure?
A: No, this model is not IPX5-rated and should not be installed within Zone 1. For shower areas, consider an IPX5-rated or in-line fan kit.

Q: Does this fan come with ducting or a grille?
A: No, this is the fan unit only. Ducting, grilles, and accessories are sold separately.

Q: Can the fan be ceiling-mounted directly above the bath?
A: It must be installed in compliance with relevant electrical safety zones and should be used with appropriate RCD protection.