I have always had an a/c on the first floor of my house. It does not get super hot where I live, so I managed to make it without a/c upstairs for multiple years. It was hot plus angry most of the time, however I just lived with it. I often times found myself sleeping downstairs in the residing room because I was too hot upstairs in my dining room. It was sort of deranged this last summer time because I spent more evenings downstairs than I did upstairs. I knew that it was time to get an a/c for my dining room upstairs. I wanted to be able to sleep in my dining room even when it was entirely warm outside. I bought an a/c from a friend of mine, however it did not toil really well. I only paid like ten dollars for it, so I was not too aggravated. She told me that she had not used it in years, so she was not aware that it did not toil well, after that, I decided to just go ahead plus buy a brand current one. It is still March, so I have a couple of months until I will have to use my a/c, however I am super gleeful about it. It will make life so much easier for me. My laundry room is upstairs next to my dining room, plus it will be so nice to be able to do laundry plus not sweat to death in the process. My spouse is super gleeful to have a cool room this summer time as well.
Heating and cooling equipment
The different types of thermostats