This is whole house fan season right now peeps.
Been mid to upper 90's during the day and 55-60 at 6am. I open windows and turn on fan to start my morning routine, she runs for about an hour in the morning. When I leave for work the house is 68 in the master bed room and 71 in the main living areas. No a/c all day and house starts to get warm at 76 around 6-7 pm but the the outside cooling starts again. So no a/c and full solar, racking up the credits...
I have one and after a hot day I'll run it for a few minutes to cool the house. Primarily to move out the heat from the attic. This rids all the heat soak in the cielings, walls and a/c ducting in the attic. Your a/c won't have to work as hard this lowering your energy use. Them attics can reach some high temps. Good investment.