Ultra-quiet 100mm axial bathroom extractor fan with adjustable overrun timer, IP45 rated, operating at just 26.5 dB for near-silent ventilation.
The Envirovent SIL100T is an ultra-quiet bathroom extractor fan that solves the common complaint about noisy ventilation. Operating at just 26.5 dB, it is barely audible during operation, making it suitable for en-suites adjacent to bedrooms and bathrooms in quiet homes. The adjustable overrun timer allows the fan to continue extracting moisture after the light is switched off, which is essential for effective condensation control in bathrooms without openable windows.
Bathroom extractor fans are a Building Regulations requirement in rooms without adequate natural ventilation, but the standard axial fans fitted in many UK homes are noticeably noisy. The Envirovent SIL100T addresses this with an engineering focus on noise reduction without sacrificing extraction performance.
At 26.5 dB(A), the SIL100T operates below the level of a quiet whisper. This is achieved through the motor design and blade profile, which moves air efficiently without the turbulence that creates noise in cheaper fans. For en-suites attached to bedrooms, this level of quiet operation makes the difference between a fan that gets switched off to avoid disturbance and one that runs as intended.
The adjustable overrun timer is the feature that makes this fan compliant with Building Regulations Part F for bathrooms without openable windows. When wired to the bathroom light circuit, the fan starts when the light is turned on and continues running for the set overrun period after the light is switched off. This period is adjustable between 1 and 30 minutes, allowing the installer to set an appropriate duration based on the bathroom size and ventilation requirements.
The timer model requires both a permanent live feed and a switched live from the lighting circuit. This means two cables need to be available at the fan location. In retrofit situations where only a single switched feed exists, the wiring will need to be extended. A qualified electrician should carry out the installation.
The Envirovent SIL100T is the bathroom extractor fan to specify when noise is a concern. The 26.5 dB operating level is genuinely quiet, the extraction rate meets Building Regulations requirements, and the adjustable timer provides proper moisture control for condensation-prone bathrooms.
| Fan Size | 100mm (4 inch) |
|---|---|
| Extraction Rate | 26 l/s |
| Noise Level | 26.5 dB(A) |
| Power Consumption | 10W |
| IP Rating | IP45 |
| Timer | Adjustable 1-30 minutes overrun |
| Voltage | 240V AC |
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