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Design support

At the early concept and design stage the Passivent Sales team will discuss the scope and requirements of the project with the customer and ascertain the core ventilation strategy to be employed.

There are many factors which will influence this strategy, some of which are shown below:

  • Building design
  • Building orientation
  • Building location
  • Proximity of building to other buildings.
  • Building fabric
  • Building use
  • Dimensions of rooms
  • Aesthetic requirements
  • Heating system specified

The above information, in addition to drawings provided by the customer, will form a comprehensive brief for the Passivent Technical team who will then be able to provide bulk airflow calculations and a detailed quotation.

Sometimes more detailed thermal modelling may be required. See IES section for further information or to discuss support with thermal modelling please contact us on

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Contact us today to discover more about our extensive range of natural and hybrid ventilation products and the technical support services we can offer.

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Passivent is a division of Building Product Design Ltd.

Other subsidiaries include Glidevale Protect, a specialist in ventilation solutions, condensation control and energy efficiency across the built environment and Kingfisher Louvres, manufacturer of aluminium louvre systems.

Important Notice

Please be vigilant of fraud/cyber crime. If you receive an email from our parent company Building Product Design Ltd, please check that the email address from the sender ends in '' and any phone number given is 0161 905 5700.

If you receive any emails ending in '' or '', these are NOT legitimate, and you should contact us as soon as possible at

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