ᐅ Rebate Ventilation or Controlled Ventilation?

A new building was recently described in a newspaper where the air exchange is regulated through window rebate ventilation.

Is this a reasonable alternative to a controlled ventilation system, and does it help prevent mold?

How exactly does it work?

In my opinion, this is standard nowadays if you don’t use a mechanical ventilation system with heat recovery...

Think about it yourself: You are building a house and have to invest tens of thousands of euros to insulate it according to regulations and ensure your house is airtight.
And now you install windows with holes that allow fresh air to enter the house freely again.
Does that make sense to you?

Yes, that sounds contradictory. But you have to do something to avoid mold growth. Opinions on ventilation systems are very mixed. With window ventilation, warm air also escapes.

I believe @Nordlys is using RegelAir (?)

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Heidi1965 schrieb:

How exactly does this work?

There are holes in the insulated windows. The air circulates randomly and uncontrollably through them. That basically sums it up.