Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
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Roof mount power fans are a type of motor driven attic exhaust vent that make up half of a balanced attic ventilation system for each roof.
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Intake vents make up the other half of the system.
When the power vent goes off it acts like a roof louver an opening on the roof.
Power vents with balanced motor and blade design power vents quickly exhaust heat or humidity from any attic.
Attic power ventilators are mounted to the roof of the home and are connected electronically to a power source and in most cases the home s thermostat.
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While a simple vent is sometimes used to allow for the passive flow of air it s also possible to add a powered attic fan commonly called an attic power ventilator.
Intake vents located at the lowest part of the roof under the eaves allow cool.
When the power vent goes on it can actually pull air from the ridge vent which can cause an imbalance of airflow along the underside of the roof deck.
It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation.
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Having both a power vent and ridge vent installed on your roof can short circuit the attic ventilation system.
Together they help remove any built up heat and moisture inside the attic for year round ventilation.