Anything you get for free is bound to be a disaster. I had been saving my money for a cooling system in my home. A neighbor of mine was getting rid of a bunch of window undefined. He gave the A/C systems to me for free. He did not want to mess with getting rid of them, & I needed the AC. It made perfect sense. I should have considered that free a/c that was going to be thrown out would not be the best quality. Now that I have a bunch of window undefined set up, I am not ecstatic with them. I want to get central a/c still. I plan to continue saving up & then update the cooling situation. For now, I just keep telling myself to be thankful that I have any AC. The window undefined are stained & rusted. They look bad in my home. Also, the cooling unit really have something wrong with them. Maybe it is the refrigerant or they are on their last legs, but either way, the cooling units all make a horrible grinding sound when on. It is actually difficult to sleep with many noisy A/C units running. It is super loud apartment all day long since I can’t stop running the A/C units. It is that moderate outside. So while I love having temperature control for once, I hate the undefineds that are giving it to me. I have literally thought about throwing them out & buying current portable A/C units. But, that would take out of the central A/C fund.