PRESSURE-SENSING Make Up Air for Homes? (AND WHY IT'S COMPLICATED)- Airscape MUA System
Corbett Lunsford
People have asked many times whether a whole-home make up air system can simply monitor the house pressure, and equalize it automatically when necessary. This would handle depressurization from bath fans, kitchen exhaust hoods, vented dryers, and fireplaces. While there IS a system available that aims to do this (https://airscapefans.com/collections/other-residential-ventilation/products/residential-makeup-air-unit), it cannot completely eliminate the pressure imbalances smaller than 2 Pascals because of the variance in wind (and stack effect). I have personally seen fireplaces backdraft with as little as 2 Pascals of home depressurization.
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