BLEC GROUP, install, repair and Service all types of AOV Systems including those manufactured by Velux, Ventec, S E Controls, Window Master, Dyer, Easivent and SCS systems.

We operate in in the following areas: London, Devon, Cornwall, Bristol, South Wales, Oxfordshire, Hampshire, Hertfordshire, Middlesex and Surrey.

We can normally respond to an emergency call-out within 24 hours so we can have your system up and running without inconvenience, helping you make sure that your premises are safe again.



Typical Faults

  • Window or vent remaining open
  • Window or vent not opening when tested
  • Window or vent only partially opening
  • Fault LED indicated on AOV manual call point
  • AOV control unit appears to be hot
  • AOV control unit beeping
  • AOV manual call point beeping
  • Smoke detector or fire alarm system not activating AOV system

All of our fully qualified engineers carry a stock of the most common replacement parts, such as back-up batteries, manual call points and smoke detectors, so that the repair can often be completed during a single visit.

When this is not possible, we will provide you with a written, accurate repair quotation including parts and labour together with correct lead times so that you can have your system up and running as soon as possible.