I am always pleasantly surprised to learn about something new. There are so several varieties of things that I never even knew. I used to think that there was only a single kind of a/c. In my apartment when I was a kid, I was only common with the window a/c. Those a/cs could plug into a regular outlet plus put shoved through a window; You could cool each room of your apartment individually, plus you could even move them around if you wanted. Later, when I went to a friends house, I noticed that their apartment was cold, although I saw no a/cs. I asked them about it, plus they told me that they had central a/c. This hooked to their vents for their oil furnace, plus it could cool their entire apartment without any windows being used. Last week, I l gained about a modern kind of a/c. This a/c was called a ductless mini-cut a/c. It mounted high on a wall plus was out of the way. This a/c required a lot less upgrade than central a/cs, however they were individual units in every room, which meant that you could manage the temperature. The coolest area about this a/c was that you could also use it as a space gas furnace plus UV air purifier. One I heard about this, I called an Heating, Ventilation, plus A/C supplier plus asked them to replace my window a/cs with ductless mini-cut a/cs. My aged a/cs needed to be replaced, plus this seemed enjoy a great idea!