An air conditioner is a device that cools and dehumidifies and, possibly, cleans air. To air condition means to do the things that an air conditioner does.
I hate hot and hot weather almost as much as I hate winter weather. If the person who invented air conditioning didn’t win a Nobel Prize then those prizes must clearly be fixed.
How people are able to live in tropical climates—even if that tropics-like weather lasts for only a few weeks per year—without the benefit of air conditioning is totally beyond me. They must be made of cooler stuff than I am.
Then again, our house was not air conditioned when I was growing up. Yet, I managed to survive. I have no explanation for this other than the possibility that I had super-human powers as a child that I lost when I grew up.