Aereco S.A.

Feedback on installation, maintenance, and aging of mechanical humidity-controlled exhaust units Video

How do humidity sensitive products perform over long periods of time ?

With 35 years of existence and more than 10 million equipped dwellings, mechanical humidity-based demand-controlled ventilation (HR-DCV) can provide a comprehensive feedback on installation, aging, and maintenance of its components. Their working principle is based on the extensions and retractions of a hygroscopic fabric, which pulls on a shutter to modify the device’s cross-section – hence the airflow – upon humidity changes in their environment.

In 2006, before generalizing the usage of HR-DVC in French residential buildings, the Ministry for Housing ordered an evaluation of these systems after prolonged on-site operation. For this purpose, the COSTIC laboratory selected 21 social housings in the Parisian suburb, and collected with Aereco 57 extraction units after 6 years of in-situ functioning.

Discover in this webinar all the on-site observations and conclusion.

Questions asked by participants:

• How do you determine if the IAQ is ensured? 13:29
• What is IAQ? 14:40
• Would you advise against installing auto-adjusting exhaust units? 15:30
• What was the manual shutter position during the tests? 17:47
• To your knowledge, is that the first study about ventilation units aging (in situ + in lab) ? 18:09
• What about the inlet ? Do the sytem works properly after 6 years without maintenance or with poor maintenance ? 19:13
• Can you explain one more time why you were changing the tolerance range from higher to lower? 20:25
• How regularly do you think the units should be cleaned? 21:58
• Do you have some precise prescription for air inlets as well as extract units maintenance? 22:22

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