Each room is as cool as the next. I have known people who put on a sweater in their air conditioned home instead of attempting to find a setting that is cooler than the outdoor temperature, yet not freezing cold. These people have a great deal of expendable cash, and do not mind their big energy bills. I have separate air conditioners in my windows, and I even have a portable air conditioning unit to take care of my cooling requirements.
On the other hand, I have to watch my energy usage, and that includes my air conditioning bill throughout the summer season. I wait until the temperature inside is too high to be made tolerable with a fan. That is when my window air conditioning units pay for themselves. On the other hand, some people say that re-cooling your home every day expends more energy than always leaving it at one temperature. In my case, my method works best for me, according to my electric bills!
The only areas I cool are the rooms in which I live. This gets rid of the bathrooms, utility room, pantry, and porch areas. In the cool of the night, I open my windows and let the cool air get in. I close the drapes and windows in the early morning before the sun comes up. If I run out the house throughout the day, the units are turned off. When I return at night, the units are switched on the lowest setting it will take to make the rooms I am using comfortable. I do not cool my bed room until an hour before bedtime.
If I am home throughout the day, the windows and drapes stay shut. The units are switched on the lowest setting possible. I confine myself to the immediate living areas; kitchen, living room, or den. The unit in my bed room is turned off. A cool shower during the day helps me to adjust to the temperature BJ Refrigeration . I do not want to have to cool the house because I have worked up a sweat cleaning or working out. These few, basic ideas keep my energy costs down, and help me to stay comfortable in the heat of summer.