I live in L.A. We only have really hot weather 5-10 days a year and it usually cools off at night (outside). I also have a large Gable vent in my attic. (recently added with addition)
I would like to install a gable fan in the attic and then install louvered vents in my hallway ceiling. When the gable fan comes on, the ceiling vents would pull warm house air up and out and allow cooler (night) air to come in.
I would like to not use the thermostat and have the unit switched in the house. This way it would not run during the day.
I have no attic vents around the side of the house or roof vents.
A/C estimates were $7,000+.