Recently I have been thinking about replacing all of the window machine ACs in my house. When I bought the condo 3 years ago, I found out that the people who owned it before me built the condo and put the window AC units in when they built the house. I was not too sure about trying this method of cooling by using window units, however after a few weeks, I saw the advantage of them over the central cooling system. The window machine A/C uses much less energy as well as cools the room faster than a central cooling system. The amount of energy used by a window machine A/C is significantly less than a central cooling system. Occasionally, I get sick of the noise coming from the window machine AC. After a few years, I am completely used to the concept of a window machine A/C as well as would appreciate to always have them in my house. I appreciate the method of not cooling a room that people are not using. It is important to me to save energy. The thought of people cooling a room that isn’t even being used blows my mind. I hope that window machine ACs will become more commonplace, even though they are a bit aged. People should realize that the concept of window machine ACs is beneficial for the environment. I decided that replacing all of my window machine ACs would be less expensive than using central heating and cooling. I am ecstatic that the window machine ACs work for me and my family. I hope that pretty much everyone will consider them.