I have consistently had an a/c on the first floor of my house.
It does not get super tepid where I live, so I managed to make it without a/c upstairs for various years.
It was tepid & angry most of the time, even though I just lived with it. I often times found myself sleeping downstairs in the residing room because I was too tepid upstairs in my bedroom. It was sort of deranged this last summer time because I spent more mornings downstairs than I did upstairs. I knew that it was time to get an a/c for my bedroom upstairs. I wanted to be able to sleep in my bedroom even when it was genuinely warm outside. I bought an a/c from a friend of mine, but it did not labor genuinely well. I only paid like ten dollars for it, so I was not too angry. She told me that he had not used it in years, so he was not aware that it did not labor well, and after that, I decided to just go ahead & buy a brand modern one. It is still May, so I have a couple of months until I will have to use my a/c, even though I am super happy about it. It will make life so much easier for me. My laundry room is upstairs next to my bedroom, & it will be so nice to be able to do laundry & not sweat to death in the process. My spouse is super happy to have a cool room this summer time as well.