Skip to content

Natural daylight

Natural daylight, as well as natural ventilation, are recognised factors in improving the wellbeing of a building’s occupants. Passivent’s Litevent is a controllable roof ventilation terminal combined with a rooflight that provides natural daylight.  


Passivent offers a range of controllers – intelligent and stand-alone – to suit the requirements of its natural or Hybrid Plus ventilation systems. The iC8000 is a multi-zone, intelligent controller with Passivent’s own ventilation software. It can be used as a stand-alone system, working independently, or be integrated with the building management system (BMS) using BACnet communication.

Not all situations require a fully automated system and some ventilation strategies require manual opening of louvres and windows. The eC stand-alone controllers have been designed to control individual elements of a natural ventilation system allowing the user to manually operate it. These controllers are also available with auto-close functionality after a defined period of time to remove security concerns.

Discover more

Natural Daylight

The benefits of natural daylight and natural ventilation are undisputed – they improve our productivity, our focus and our wellbeing. While Passivent’s product ranges focus on natural ventilation, we also offer a product called ‘Litevent Airstract®’ in the roof terminal range that provides both – it combines a controllable ventilator with a rooflight bringing natural daylight, as well as natural ventilation into your building project.

Discover more

Talk to us

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

Get in touch

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

Site by Harris