As houses become more airtight moving up the Code, ventilation becomes increasingly important. But how do you change stale air without burning energy?

Michael Willoughby went to Holland to look at Itho’s DemandFlow system, which claims to have the answer.

DemandFlow - the plenum big


An animation of the system can be found here, although the commentary is in Dutch!

Podcast: Download (2.6MB)

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