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What is passive background ventilation?

April 26, 2017background passive Ventilation

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What is passive background ventilation?

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Also known as Trickle Ventilation, it is a system whereby adjustable ventilation inlets and outlets are provided to every room of the house by way of the window system. This allows fresh air from the outside to replace stale and moisture-laden air inside the home through a natural process. It does not replace opening sashes but is in addition to them.