All our air ducts were ripped out before we moved here. We finally replaced them a few weeks ago. Our a/c is electric so I am praying it doesn’t run our power bill sky high. We just added new insullation and replaced some of the windows. We have ceiling fans in every room. I am hoping we won’t have to run it too much.
One thing I want to add, is that 90% of our windows face the south so we get get a lot of sun at the hottest part of the day. We have black out shade of three of the windows, we hang a dark cover over one of the others, and I wish there was more we could do for our sliding glass doors.
Last year we hung a fan in the dinning room which helps. But we have found if he keep the house any warmer in the summer, we can’t stand it.