If your attic space is too hot, it will be difficult keeping the inside of your home cool during the summer months. Because hot air rises, the attic will naturally be warmer. In fact during the summer, temperatures can exceed 140 degrees in the attic, and that hot air can begin to influence your living space.
Gable vents, ridge vents, or wind-driven turbines allow the hot air to escape from the top of the attic. As it goes out, it creates a vacuum which can begin drawing up cooler air from inside your home. That’s why you must have soffit, or eave, vents. They let in the cooler outside air at the bottom of the attic, pushing the hotter air out at the top.
You can also give the natural rise of warm air a boost by adding an attic fan to force that hot air out of your attic.