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Silent 100 Ecowatt

Energy Efficient, Ultra Quiet WC & Bathroom Extractor Fan. Fitted with a pilot light, backdraught shutter and airflow guide vanes. Perfect for Zone 1 installs.

The Silent 100 Ecowatt domestic axial extractor fan is designed for WC and bathroom ventilation. With energy consumption of only 5 Watts, the Silent 100 Ecowatt extractor fan is not only extremely energy efficient, but can also achieve incredibly low noise levels of 26.5dB.

Fitted with motors mounted on silent elastic blocks, the extractor fan delivers a high extract performance of 26 l/s and can be mounted on a wall or ceiling, whilst remaining a silent extractor fan. 


Key Features

  • Energy Efficient
    Energy Efficient
  • Quiet Operation
    Quiet Operation
  • Backdraught Shutter
    Backdraught Shutter
  • Pull-cord
  • IP57 Rated
    IP57 Rated
  • 5 Year Warranty
    5 Year Warranty

Innovative Features

Fitted with pilot light, backdraught shutter and airflow guide vanes as standard to improve pressure performance, the Silent 100 Ecowatt is also available with numerous quality features to include optional timer, humidity sensor, SELV and PIR models.

DC Motor Technology

The fan is fitted with 12VDC brushless motor and designed for operation at SELV.

Adjustable Timer

After disconnection, the shut off time can be delayed between 1 and 30 minutes.

Adjustable Humidity Sensor

The level of humidity for the bathroom can be chosen from between 60% and 90% RH. The extract fan will continue to work long enough to reach the selected level.


Automatically starts up when the fan detects movement at a maximum of 4 metres.


Designed to work within the safety area, connected to remotely sited transformers.

Back Draft Shutter

To prevent air entry and limit heat leakage when the extractor is not operating. It opens due to the pressure of the air.

Product Codes
Product Code
Product Name
Product Description
Silent 100 Ecowatt
Silent 100 Ecowatt
Adjustable Timer
Silent 100 Ecowatt
Adjustable Timer, Adjustable Humidity Sensor
Silent 100 Ecowatt
Adjustable Timer, PIR
Silent 100 Ecowatt
Adjustable Timer, SELV
Silent 100 Ecowatt
Adjustable Timer, Adjustable Humidity Sensor, Pull-cord, SELV
Product Specification

Performance Curve

Related Documents
Question & Answers

Should I remove the tape on the inside of the Silent HT fan?

No, this is Hydroscopic tape, it is to protect the sensor from moisture, but will allow vapour through. Removing this may damage the sensor and invalidate the warranty.

Why is my Silent extractor fan running continuously?

This may be due to incorrect wiring, please have a qualified electrician check this with the install guide and speak to the EnviroVent technical department if required. It may also be due to an incorrectly set humidity sensor (model dependant). If a humidity sensor version is fitted the sensitivity can be adjusted on the extractor fan. Adjusting clock wise will make the sensor less sensitive, anticlockwise will make the sensor more sensitive to humidity.

My Silent extractor fan will not run

If an extractor fan will not operate, a qualified electrician will need to check the wiring, ensuring the fan is wired correctly and receiving power.

How do I get the front cover off my Silent extractor fan?

Always isolate power first. The cover can be removed by firstly pushing the small reseeded retaining point on one of the edges of the extractor fan, then slowly unclipping the rest of the cover with a small flat screw driver.

What wiring does the Silent T and HT require?

The extractor fans require a permanent live and neutral and a switch live (to trigger the fan)

Can I fit a 230V extractor fan in zones 1 or 2 of a bathroom?

Yes, as long as the circuit is protected by a 30mA RCD
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