Extraction Fans

The SensaFan A25 extraction fan range is a fully automatic 100mm (4″) safety extra low voltage axial fan for wall, ceiling or window applications in Zone 1. The energy efficient ball bearing 12V DC motor requires 2 watts of power when operating.  This extraction fan unit is supplied with a fan remote humidity sensor & transformer.

The Dynamic Humidity sensor within this extraction fan is designed to operate when any rapid increase in the humidity is sensed. When the water vapour has been extracted and the room returns to the previous humidity level, the Dynamic Controller will switch the fan off boost back to the pre-set trickle rate.


  • Extract rate 90m3 per hour (25 ltrs/sec)
  • SELV extraction fan unit can be positioned in Zone 1 or 2
  • Transformer/Humidity sensor unit must be positioned outside Zone 2
  • Lower energy cost for tenant in keeping with Government Directive regarding energy efficient electrical appliances in Social Housing
  • 5 Year Guarantee