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Gravity Roof Ventilation Turbo Charged

The Aura Gravity Roof Ventilator vigorously removes heat from the attic in the summer and moisture from the attic in the winter. How does it do this? The Aura Gravity Ventilator functions like a spinning roof turbine, but does not need to spin in order to work. Functioning with no moving parts the Aura Gravity Ventilator pulls hot attic air every time the wind blows. This is done by a phenomenon called the “Venturi Effect”. The Aura Gravity Ventilator also ventilates the roof through other means. “The Stack Effect” this is when hot air rises out of the roof through the roof vents. As the hot air rises, it accelerates to the outside. This powerful dynamic ventilates the attic constantly.

All this ventilation happens without any rain or snow from entering the Aura Gravity Ventilator. Birds, insects or animals will not be able to penetrate the Aura’s fortress of three rows of metal louvers.

Engineered and certified for both flat roof ventilation and steep slope ventilation, the Aura Gravity Ventilator is available for both residential and commercial buildings. UL listed this gravity roof vent is rated to withstand wind pressures of over 50 PSF, which is equivalent to wind speeds exceeding 200 mph! The Aura Gravity Ventilator is also Florida State, Texas Department of Insurance Listed and conforms to CAL FIRE standards. Available with standard flashing or curb mount flashing the Aura Gravity Ventilators can be installed onto asphalt shingle roofs, membrane roofs and on roof curbs alike.

Pick a ventilator that is the right size and height and choose the color that will look best on your roof. If you have any questions, please email or call us today!

Listed below are the Engineering Benefits of the Aura Gravity Ventilator’s Multi Louver Design.

  • Louvers Ventilate better than insect screen
  • Louvers prevent insects from entering the vent
  • The inner most row of louvers have a 1/8th inch opening which provides vigorous air movement and eliminates back pressure.
  • Wind driven rain and snow will not get passed the three rows of metal louvers.
  • Animals cannot and will not break through these metal vents louvers.
  • Animals are breaking through plastic roof vents.

How the Aura Gravity Ventilator works (in greater detail).

As you know by now the Aura Gravity Ventilator uses wind to help exhaust out hot attic air with no moving parts. Here is a deeper explanation on how this gravity ventilator accomplishes this function. To start, when wind enters the outer row of louvers, the angle of the louvers causes the wind to spin around the circumference of the gravity vent. Spinning air or vortex creates suction towards the center of the vent (throat). This suction creates the necessary vacuum to extract out the hot and moisture attic air within. This function is demonstrated by the cartoon animation on the top right hand side of this page. Air flow ratings were documented by Georgia Tech.

Aura Gravity Ventilators are made up of aluminum, making them durable, lightweight and will not rust. Gravity ventilators can be painted by our durable powder coating system, see our color options powder coat colors.


All of AVP’s roof vents can be fitted with tail pipe adapters if exhausting out a duct system, such as a bathroom or range hood fan exhaust is needed.

The Aura Gravity Ventilator line is great for any roof application because of how customizable it is. You can choose the height, diameter, and the type of base you may need. Flanges can be installed directly on roof decks or roof curbs with our curb mount flange option. Vents are available as a retrofit onto existing roof turbine bases.

Aura Roof Ventilator Animation - Venturi Effect

The Aura Ventilator™ uses minimal wind power and no moving parts. The wind enters the unit through a set of exterior vertical louvers, producing the necessary vacuum to extract excess moisture through a second set of interior louvers. As demonstrated from this view from above, air enters vent from the front (left side of diagram), passing through exterior louvers into the inner chamber, where it circulates and picks up speed. As a result, a vacuum draws up the warm vapors from beneath the vent into the middle section. These vapors enter the inner chamber through the interior louvers and circulate together with the air which had entered from outside, until they both forcefully exit through the back of the vent (the right side of the diagram).