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Measuring Mechanical Ventilation Airflow

January/February 2012
This article originally appeared in the January/February 2012 issue of Home Energy Magazine.
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January 03, 2012
If the air in a house were a smoky brown or green and we could actually see particles floating around in it, and if it suddenly became crystal clear when the ventilation system was turned on, it would be a lot easier to convince people that mechanical ventilation is necessary! As the house gets tighter, the effectiveness of the ventilation system becomes increasingly critical. It's critical because people need air to breathe, and we have all sorts of chemicals in our homes that may diminish indoor air quality (IAQ). Cleaners and perfumes, cooked food, and materials that off-gas formaldehyde, such as some furniture, add things to the air that we're better off not breathing.

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