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What is infiltration?

This is the uncontrolled flow of air into a space through adventitious or unintentional gaps and cracks in the building envelope. The corresponding loss of air from an enclosed space is termed 'exfiltration'. The rate of air infiltration is dependent on the porosity of the building shell and the magnitude of the natural driving forces of wind and temperature.

What is ventilation?

Definitions covering ventilation and the flow of air into and out of a space include:

Purpose provided (intentional) ventilation: Ventilation is the process by which ‘clean’ air (normally outdoor air) is intentionally provided to a space and stale air is removed. This may be accomplished by either natural or mechanical means.

30 November 2021 [10:30-12:00CET] – Upcoming Webinar "Inspection of ventilation systems in new regulations in European countries"

The Air Infiltration and Ventilation Centre (AIVC) and TightVent Europe are organizing the webinar "Inspection of ventilation systems in new regulations in European countries" to be held on November 30th, 2021 at 10:30-12:00 CET. The objective of this webinar is to present new regulation requirements in Ireland, Germany and France.

Presentations & Speakers

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