I have the gable vents all around the house, but what appears to be happening is the attic fan is just sucking hot air from outside into the attic, and not helping keep the attick temp down.
I am wondering, is it a good idea to cover the gable vents (mine are 5 inch wide screens running the length of the house) during the hot summer months with say plastic sheeting? Would this help keep the fan from sucking hotter air in from the outside? Would it basically ruin the idea behind the attic exhaust fan?
It just seems that the fan is a waste when all it does is suck in more hot air through the gable vents.
Any insights from anyone with similar experiences or ideas will be tremendously appreciated!