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Devola Bathroom Extractor Fan Review: Reliable ventilation with adjustable timer

Devola 100mm Mixed Flow Bathroom Extractor Fan with Timer, 4 inch Quiet Tile Extractor Fan, Made in Britain (Overrun Time Delay) - DVQTF100T
4.7
[Easy Installation & Cleaning]  Hassle-free setup with adjustable 2–30 minute run-on timer for custom ventilation.
[High Extraction Rate]  85 m³/h airflow efficiently removes humidity and odors; built-in backdraft shutter included.
[Versatile Room Coverage]  Covers rooms from 3–13 m²; ideal for bathrooms, kitchens, bedrooms, offices.
[Backdraft Protection]  Translucent flexible flaps stop unwanted air and reduce heat loss when idle.
[Premium Build & Warranty]  German-engineered motor, Made in Britain, with a reassuring 5-Year Warranty.
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Bathroom ventilation removes moisture and odours efficiently in small to medium rooms. The Devola Bathroom Extractor Fan brings an adjustable 2–30 minute run-on timer and a backdraft shutter, delivering quieter, more controllable ventilation.

⚡ At a Glance
  • Suction Power: 85 m³/h extraction rate, suitable for typical bathrooms and WCs
  • Best for: Small to medium bathrooms, WCs, kitchens and offices needing routine ventilation
  • Not ideal for: Very large or open-plan spaces that require higher extraction capacity

Adjustable run-on timer from 2–30 minutes supports tailored ventilation after use. Built with a German-engineered motor, backdraft shutter and a five-year warranty, made in Britain.


Reliable moisture and odour removal – thanks to 85 m³/h extraction rate

An 85 m³/h mixed flow airflow moves stagnant, humid air out of the room through a 100mm spigot. The airflow rate is matched to typical WC and bathroom sizes listed by the manufacturer.

Rapid clearing of steam and smells reduces condensation-related problems and helps prevent mould formation. Suitable for bathrooms and WCs within the recommended room-size ranges.

Controlled ventilation after use – with an adjustable 2–30 minute run-on timer

An individually adjustable run-on timer lets the fan continue running for between 2 and 30 minutes after the switch is turned off. The timer ensures lingering moisture is expelled without manual override.

Bathroom air stays drier after showers, cutting down on lingering damp and odours. The timer makes operation convenient for household routines.

Reduced draughts and heat loss – with a built-in backdraft shutter

Translucent flexible flaps on the rear spigot act as a backdraft shutter to block unwanted airflow when the fan is idle. The shutter minimises cold air entering the property through the duct.

Warmer homes and fewer cold draughts when the fan is off, improving comfort. Useful in properties where heat loss through ventilation runs is a concern.

✨ The 4 Key Reasons for Devola Bathroom Extractor Fan
  1. Easy installation and cleaning – Quick fitting and straightforward maintenance, saving installer time
  2. Adjustable run-on timer – Custom 2–30 minute delay clears lingering humidity after shower use
  3. Backdraft shutter – Flexible flap prevents external draughts, reduces heat loss
  4. German-engineered motor & 5-year warranty – Durable performance backed by extended manufacturer support and reliability
📋 Technical Details at a Glance
  • Category: Bathroom/wet-room extractor fan
  • Extraction rate: 85 m³/h
  • Duct diameter: 100mm (4 inch)
  • Run-on timer: Individually adjustable, 2–30 minutes
  • Backdraft protection: Translucent flexible flaps on rear spigot
❓ Frequently Asked Questions

Q: Is the fan suitable for my bathroom size?

A: Yes, the manufacturer lists suitability ranges: bathrooms 3–9 m² and WCs 3–4 m², with additional guidance for bedrooms, kitchens and offices.

Q: Does the fan prevent cold draughts when not running?

A: Yes, translucent flexible flaps on the rear spigot act as a backdraft shutter to stop unwanted air flowing back and reduce heat loss when on standby.

Q: Is installation and maintenance difficult?

A: No, the fan is described as easy to install and clean, with a design intended for hassle-free setup and simple maintenance.

🏆 Our Verdict

The Devola Bathroom Extractor Fan is ideal for homeowners and landlords seeking dependable ventilation in small to medium rooms. The combination of an adjustable 2–30 minute timer, 85 m³/h extraction and backdraft shutter delivers efficient moisture control and fewer draughts. With a German-engineered motor, Made in Britain credentials and a five-year warranty, it presents solid long-term value for reliable ventilation.