They differ from whole house fans which are attic installed fans intended to cool the entire home rather than simply maintain proper attic temperature.
Hot air from attic behind wall.
Make sure they are all open and will allow for the maximum amount of air to pass through.
Your vents can get clogged from dirt rust or insulation that was blown in from the attic.
Of clearance above the fan.
This sends hot air up and out cooling your house and your attic.
These fans are commonly mounted in an upstairs stairwell or hallway ceiling where there s at least 3 ft.
A powerful fan draws cooler early morning and evening air through open doors and windows and forces it up through the attic and out the roof vents.
Seal all attic air leaks.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
Intake vents located at the lowest part of the roof under.
There are probably many small air leaks in your attic space which can cause a major source of heat loss in many homes.
The opposite happens in cold weather thus your improved temperature balance in winter.
Install electric ventilators and attic fans which remove hot air from an attic.
Reverse stack effect in hot weather will create a highway of hot air from your attic into the house especially the upstairs.