Silent - Greenwood

Our Silent range

  • Silent 4" Bathroom Fan

    The range of silent fans offer very quiet operation which is typically 70% less noise than standard fans!!! Available in 100mm or 4" with a range of control options.
  • Silent 4" Shower Fan Kit

    Silent shower kit offers 70% less noise that standard fans. Available as a replacement induct fan only or as part of a kit with ducting, grilles and light. Choice of control and light options. Aesthetically pleasing finish


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Building Regulations: ADF: 2010

The Building Regulations outline the airflow requirements for intermittent extract ventilation (ON/OFF) by room type.  The minimum extract rate is detailed in the table below which has been extracted from the current ADF:2010 document.

Other considerations for intermittent fan selection;

  • Proposed installation application - wall, window ceiling
  • IP Rating - which zone of the bathroom are you installing the fan into?
  • Control Option requirements - pull cord, light switch, automatic sensing
  • Level of installation - ground, first or above 3 storeys
  • Noise levels
  • Maintenance and guarantees
  • Aesthetic finish - matching option for kitchen and bathroom, decorative or discreet


Zehnder Group