If you live in a house with poor airflow, consider a whole house fan. Run it in the evening / overnight / morning with the windows open, then shut the windows (and shades if you don't mind the darkness) during the day.
There is an Ask This Old House episode where they install a whole house fan. [0]
Even if this doesn't remove the need for AC, it will decrease the load on the system by increasing how much heat the home's interior has to absorb before the AC kicks on.
We called these "attic" fans when we had one in the 1970s. They were huge, required a massive hole in the ceiling, and were loud. Modern ones are sound / thermally insulated, much smaller, require a smaller hole in the ceiling, etc.
There is an Ask This Old House episode where they install a whole house fan. [0]
Even if this doesn't remove the need for AC, it will decrease the load on the system by increasing how much heat the home's interior has to absorb before the AC kicks on.
We called these "attic" fans when we had one in the 1970s. They were huge, required a massive hole in the ceiling, and were loud. Modern ones are sound / thermally insulated, much smaller, require a smaller hole in the ceiling, etc.
[0] https://www.youtube.com/watch?v=Rwe8c6wr0AA