First the rated power of a turbine is a best case scenario.
No turbines on roof.
As the wind moves across your rooftop it turns these turbines and draws air up out of your attic area.
Examine the turbine from the exterior from the roof.
It s a measure of how much power the turbine will generate at the highest wind speed that the turbine can tolerate.
Turbine vents do indeed look like small wind turbines installed on your roof.
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If you decide to add more turbine vents to your roof be sure to buy ones that are aluminum.
Step 3 clear any obstructions away from the turbines by pulling them free.
Flat roof vents have no moving parts to break or squeak but don t vent as much air as wind driven vents.
These will not rust.
But the fact is neither of those conditions are likely to occur on a rooftop.
Aluminum no rust.
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.
The turbines are adjustable so that the spinning part is level even though the roof is slanted.