Greenwood | Low Energy Bathroom Fan, Heat Recovery System, Whole House Ventilation


Centrifugal 100mm bathroom extractor fan with integral filter
Surface mounted 100mm high performance centrifugal fan for bathroom and WCs with a range of control options including pull cord, timer, delay timer, humidistat and SELV extra low voltage. Integral grease filter. Continuously running model also available.
Features & Benefits
Models & Control Options
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Features and Benefits


SF90 is a high performance centrifugal extractor fan for installation in bathrooms and WCs. Suitable for refurbishment projects, the SF90 provides intermittent ON-OFF ventilation in line with current Building Regulation requirements and is supplied with a range of control options to suit.



  • 100mm surface mounted centrifugal flow fan for bathrooms and WCs
  • Can be installed in wall, ceiling and panel mounting applications
  • Integral, washable filter designed to provide protection of motor during the fan's operation - easily replaced at the front of the unit
  • Centrifugal pressure handling allows installations with up to 10m of 100mm ducting
  • Design includes anti-backdraught shutters to reduce unnecessary heat loss in homes when the fan is not in operation
  • Discreet, modern front fascia design which easily blends with today’s modern décors
  • Low running costs for tenants
  • Range of control options including pull cord, timer, delay timer, humidistat and SELV extra low voltage, plus single and dual speed models (SF90B, SF90T, SF90DT, SF90HT, SF90SVIT, SF90SVIHT, SF90A)
  • Continuously running model SF90A available with trickle and boost speed settings


What else should you know about SF90?

  • Cost comparison - how much does the fan cost to run?
    A 9kW electric shower costs £80.73 per year to run based on operating for 10 minutes per day.
    This is equivalent to running 49 SF90 fans for the whole year on 1.5 hours usage per day!

    You do the maths.... OK, it's only £1.65 to run SF90 for the entire year!


  • Free recycling scheme available
    It's simple really.... you choose Greenwood fans to replace others (Greenwood or not) and we will organise all of the replacement fans to be recycled. Call us for more information about this scheme which is running nationwide now.
IP24 RatedCE MARKED2 Year Gaurentee

Models & Control Options


Physical Specification


These are the typical ancillaries required for the installation of our SF90 fan - to view ancillaries in more detail, please click here

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