Attic ventilation systems effectively reduce heat and moisture in your attic, protecting your home from their damaging effects. In addition, they promote energy efficiency by reducing the load on your heating and air conditioning systems. They also reduce the risk of ice dams forming in areas of the country that have severe winter weather.

To explain it simply, exhaust ventilation systems allows hot, moist air to escape at or near the roof ridge. Moving air out of the attic through the exhaust ventilation system is done throw either passive systems that use offsetting intake ventilation systems to create a vacuum or an active or powered system that uses fans that run on an electrical source.

Wind Turbines
Also called whirlybirds. These vents are not static, as they have moving parts, but they do not have motors and instead rely on the wind to power their movement.
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Powered Vents
Power ventilators (roof or gable mounted) also known as PAVs (Power Attic Vents) have motors that turn large fans to drive hot air and moisture out of the attic.
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Gable Vents
Gable vents are often purely decorative, however they can be functioning static roof vents. They usually sit atop the side of the house where the roof lines meet.
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Ridge Vents
Ridge vents are a static vent system with no moving parts that is nearly impossible to see that sits on top of the ridgelines of your roof.
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Box Vents
Box Vents also called Low Profile Vents, Louvers, Flat Vents, or Turtle Vents are static vents.

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The first thing we need to determine when looking at attic exhaust ventilation is the size of the attic as well as the shape. The International Residential Building Code (IRC) defines attic size in terms of square footage. We take the size of the attic as well as the type of roof pitch and shape into consideration to determine the overall airflow that is optimal for the most efficient ventilation. We then choose the best intake and exhaust options and present the different options and costs to you so you can make the most informed decision.

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