The Exhaust Effect

In an exhausted building, indoor air is forced out. Outdoor air is drawn in to replace it. This applies a uniform negative pressure to the entire envelope.

The exhaust can be a: mechanical blower range hood bath fan clothes drier combustion flue furnace hot water heater fireplace wood stove pressurized hole plumbing vent chimney chase wiring penetration partition top plate sloped ceiling ballooned framing extended framing stair well attic hatch fan grill

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