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Home / Products by Brand / Tornado / Tornado Silent Bathroom Fans

Silent Tornado ST100HT Bathroom Extractor Fan + Humidistat Timer | Extractor Fan World

Product Description

Overview

The Silent Tornado ST100HT is an exceptional extractor fan. Using an IP45 rated motor, it is "resistant to jets of water from all angles" and can therefore be installed anywhere in the bathroom. Very powerful and quiet, it is also very energy efficient, using less than 8w on full power.

The ST100HT comes with an integral adjustable humidistat which may be set from 60 - 90% relative humidity (RH) and adjustable over run timer. This is particularly useful in bathrooms with lots of natural light or those in tenanted properties - where there is a possibility that the lights will not be turned on when the bathroom is in use.

The fan may be ducted up to 5m in a straight run or 3m with 2 right angled bends and can therefore be installed on the ceiling and ducted through the loft without compromising performance.

This model includes Comfort Mode which can be activated by holding the pull cord for 5 seconds. This feature delays the power from the light switch input boost operation for a maximum of 20 minutes to reduce noise and cold drafts while bathing. After the light switch is turned off, the fan will switch on for the same period the light switch had been active (up to 20 minutes), plus the overrun time period if selected (0 or 15 minutes). The LED will slowly blink repetitively (every 4 seconds) during the comfort mode lead-in time period. The LED transitions from blinking to solid LED on when the light switch boost is activated. The fans internal Relative Humidity sensor is disabled during Comfort Mode. This feature resets if there is a power cut.

The integral pull cord also activates the internal 15 minute timer. The timer can be cancelled by pulling the pull cord again.

If you do not wish to utilise these functions, or if you intend to ceiling mount the unit, the pull cord can be removed by cutting the cord. We would suggest leaving 1cm of cord which can be tucked up behind the front grille plate in case you wish to reset the fan's timer or comfort mode function in the future.

In summary, the best bathroom fan on the market by quite a distance and is supplied with a five year guarantee. It comes to market considerably cheaper than all comparable models which it comfortably out-performs and represents fantastic value. We highly recommend this fan.

Key Features

Most powerful 4 inch intermittent axial fan available - 97m3/hr
Quietest bathroom fan on the market - 25db(A)
IPX5 waterproof rated - Install in any bathroom zone
7.5w - Less energy than any equivalent axial fan
Wall or ceiling mounted
Integral back draught shutters
Integral humidistat and over run timer
Five Year Guarantee

Specification

Width: 158mm
Height: 158mm
Spigot Depth: 79mm
Spigot Diameter: 98mm

Useful Links

Specifications

Functionality

Humidistat

Size

4" / 100mm

Type

Axial

Operation

Intermittent

Extraction Rate (l/s)

Extraction Rate (m³/h)

Colour

White

Voltage

Mains Voltage

IP Rating

IPX5

Guarantee

5 Years

Brand

Tornado

Product Code

TOR ST100HT

Customer reviews

(13 Customer reviews)

Write A Review

5 Stars

85%

4 Stars

15%

3 Stars

2 Stars

1 Stars

Efficient and quiet

Have tried various extractors, mainly from the Vent Axia range, but however much they advertise themselves as silent they simply aren’t. This one obviously makes a sound but it’s smooth and subtle. The extraction rate is good. The installation was easy. I like the fact it switches off when the job of dehumidification is done not just after a set time. It was also relatively economical to buy. Overall I’m extremely satisfied. Maybe the front face could be a little more aesthetically pleasing in a very minimalist modern bathroom. But nobody really stares at the ceiling. Especially if the fan is doing a good job.

Carol Plazzotta | Brentford | February 2025

Quiet and adjustable

Very effective fan and quite for how much work it’s doing. The adjustable humidity detector and being able to turn off the timer are great features.

ED | London | June 2024

Easy to install

Does exactly as advertised, really pleased

Steven Johnson | Yorkshire | May 2024

Simple humidistat fan

Easy to install. One star taken off as the instructions were not 100% clear on how this is wired for humidistat (diagram mentions humidistat diasabled for some reason). Anyway it is wired directly with permanent L and N feeds only (though a fused isolator), no connection to the switched live terminal in my case. Took some adjustment to get the humidity set correctly as the adjustment needs to be done with the power off. Works well and no more mould in my bathroom

Matt | Aylesbury | January 2024

Great fan and it is quiet but not what i would call silent like...

I bought this fan after watching Charlie DIY on YouTube so I knew this fan wasn't exactly silent although it is quieter than some we had in the past. The Humidistat was the key feature for us as our bathroom fan isn't in the best position so we need it to run a little longer and we didn't want a timer (although this has one, you can disable it easily) as we didn't want it running 15-20 mins when used for trips to the toilet in the middle of the night.

The fan works well but it would be fair to say it took some time to get the humidity adjustment just as I would like and hit the Goldilocks spot (not too much, not too little, just right).

And with a 5 year warranty, I think they are good value for money.

Ian R | Shropshire | December 2023

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Description