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Mechanical Extract Ventilation Unit (MEV)

Designed to continuously extract moisture-laden air out of wet rooms, whilst minimising the migration of humidity to other rooms.

  • Low running cost

  • No extractor fans needed

  • Prevents mould and condensation

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Primarily for use in dwellings with 6 wet rooms or less (or dwellings up to 300m2 / 3200 sq.ft), the quiet and compact Axco Mechanical Extraction Ventilation system (MEV) is usually installed in a roof space or cupboard and ducted into all wetrooms. The low energy unit runs continuously at a normal low ventilation rate, extracting stale polluted air from rooms where the most moisture is generated, e.g. kitchens and bathrooms.

When higher humidity is detected (i.e. when showering) the system automatically boosts, returning to normal fan speed when humidity levels drop.


A flow of fresh air from outside is supplied by an Axco Positive Input Ventilation unit/s or window trickle vents to match the boost extract from the MEV fan.

Homeowners can make significant energy savings as there is no need for noisy extractor fans in each wet room which create multiple breakout points in the building, creating draughts, air leakage and heat loss.  

It is also much more economical to run one fan instead of multiple fans.

Guaranteed for 3 years, the high quality EC motor has a long-lasting performance, compared to low cost wall fans with a limited life cycle.   


  • Eliminate condensation & mould growth
  • Reduces symptoms for asthma & allergy sufferers 
  • No extractor fans needed
  • No fan grilles on wall
  • Quiet in operation
  • Removes musty odours
  • Ease of maintenance
  • Low running cost
  • Energy Saving Trust Compliant
  • Demand Controlled, adjustable humidity sensor (between 55% & 85% relative humidity) triggers boost speed