The people I was with and I live in an area where constant a/c is not needed throughout the summer. Because of this, we chose not to get central a/c in our home. The people I was with and I have an a/c unit in the upstairs, 1 in the basement, 1 in the living room, and 2 for the kitchens. This gives us the ability to turn on have a/c running only in the rooms we are using.. There are mornings on end when the only time we use an a/c unit is when we are in bed. For that reason, our hubby makes sure that he cleans all the AC units once a year, and makes special note to the AC unit in our kitchen. Last summer, he was cleaning the AC units and all I heard was an expletive. I walked out to see if he had disfigured himself. He had the kitchen AC unit kneeling on the bench and several of the parts on the porch floor. He said the a/c unit would not work. All I could suppose was, what do you mean you cannot get the a/c unit to work? With all the parts he had lying around and was seeming to be total chaos, I could absolutely understand why he couldn’t get the AC unit to work. He was really missing some parts. I was getting ready to voice our thought, when he gave myself and others a grin. He said that a couple small parts had slipped between the porch railing and fallen to the ground. Without those parts, the a/c unit would not work