Company info roof exhaust vents.
Whirlybird wind turbine roof vent.
Free delivery with 45 order.
Of vented area for every 300 sq.
No additional source of power is needed and turbines are available in a wide variety of sizes and styles.
Typically a rooftop will use two or three of these.
Lomanco wind turbines are available in three sizes 8 12 and 14.
Features compared side by side.
Lomanco is the home of the one and only whirlybird turbine ventilator the all weather turbine vent whirlybird turbines offer all of the essentials for energy savings and are geared toward going green.
The 12 turbine is available in aluminum and galvanized.
It was very annoying.
As the wind moves across your rooftop it turns these turbines and draws air up out of your attic area.
The unit is built to last many years and does not require any maintenance.
Turbine vents do indeed look like small wind turbines installed on your roof.
How much air must be moved.
A single 14 inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1 342 cfm of air.
Master flow 12 in.
Roof mounted wind turbine vents versus aura gravity ventilators.
Picture above shows both roof vents a rotary turbine vent on the left and an aura gravity ventilator on the right with curb mount flanges.
A small 12 inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space.
The 14 big whirly turbine moves 37 more air than the 12.
Weathered wood galvanized internally braced dual bearing wind turbine model gic12ww view the master flow mechanical vents 35 45 35 45.
A largely arbitrary rule of thumb that s been adopted into most building codes calls for 1 sq.
This turbine vent has a whirlybird style turbine ventilator that is 12 inches in size.
This turbine vent is constructed to decrease the buildup of ice or condensation during the winter months which in turn will reduce energy bills.
All things being equal wind driven turbine vents also known as a whirlybird roof vent do move more air than flat vents but only when the wind blows.
Air vent airhawk 12 in aluminum externally braced roof turbine vent.