You ll see that they have these metal ridge vents that have a folded edge on one side of it.
Attic fan that forces air out of the ridge vent.
Fans are needed only when there isn.
In a properly designed passive system air enters through the soffit vents rises by convection in the attic and exits through the vents in the roof or gables.
So it might be worth looking at the type of ridge vent that you have.
Also since the fan is powered by the sun it should turn off when the sky is overcast during a storm which will keep it from drawing rain into the attic.
Best ventilation is open soffit venting to a open vented ridge vent.
Do not use mechanical means electric attic fans.
The downside of attic ventilation fans.
When you are deciding between a ridge vent or an attic fan consider the needs of the attic.
Attic fans can also make a lot of noise.
Since your solar vent fan only moves 500 cfm a third to half that of a typical hardwired attic vent fan it probably won t move enough air to reverse the action of the ridge vent.
List of the cons of roof ridge vents.
Ridge vents do not always provide the proper ventilation in some homes.
Unlike ridge vents attic fans use electricity and need regular maintenance to keep working properly.
Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
An attic fan is an active system that actually forces air out.
They don t let enough air out.
More than 50 of the attic fans i see do not work and have current still live to the motor.
The effect of ridge vents for the roof depends upon the energy efficient nature of the structure.
The certainteed ridge vents the company s called air vent or the brand is called air vent.
However the utility of attic ventilation fans is actually quite a controversial topic.
Choosing a ridge vent or an attic fan.
Ridge vent must me installed per the manufactures instructions.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.
You ll be able to move air throughout the attic without the use of fans or turbines when enough space is given to this vent design.
Electric attic fans however often increase energy consumption and cancel out any savings unless the attic is not insulated at all.