Back when I had a window air conditioner system back in the afternoon, I recall it being a real hassle right at the end of summer time when fall was coming around.
You would get all kinds of tree debris and leaves blowing onto the section of the window air conditioner unit that sat outside the window.
Cleaning it off was really strenuous to do; Especially if it was on a 2nd floor room. In these cases I had to constantly make the study room filthy and bring all that tree debris in when I was taking out the window air conditioner unit to put it away for the winter. I would have to vacuum up all the junk off my study room floor and then sanitize it as well. It was more or less having to do a deep clean of the study room after all of this. I am so ecstatic these days are long gone and today pretty much everyone has central heating and air conditioner systems. I do not miss the days of window cooling systems one bit! Having central air conditioner there is no uninstalling it every single year. It is there all the time and also works as your heater. Though central heating and air conditioner systems are much more fancy in energy to run than window air conditioner units or even gas furnaces, I still like central heating and cooling over the way things used to be. Especially when it comes to window air conditioner systems. I am sincerely not a fan of window cooling systems for the exact reason I explained above with the tree debris!