Instead of using the air conditioner when the weather is very warm, open windows and use fans as much as you can. If you must use the air conditioner when it is exceptionally hot, have it on a higher temperature, say about 80, and use floor fans (two or three medium size to a little larger) as well.
If you are just sitting there any way, put your feet in a tub of cold water.
Tips for keeping those electricity bills lower in the summer.
Stay cool.