Many homes already have some sort of gable vent since this type of attic ventilation has been the industry standard for many years.
Attic air circulation fan.
Attic fan ventilation attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.
In the winter warm moist air seeps into the attic from the living space below.
That cuts cooling costs and prolongs shingle life.
For ease of installation this is the best option.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
Good ventilation allows the heat and moisture to escape.
Whole house fans powered attic fans.
An attic fan works by drawing in cool air to the attic space that pushes out the hot air through vents.
In such doing the attic fan will reduce the temperature in the attic space that in turn cools down the whole house.
In the summer good attic ventilation reduces heat buildup.
Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.