With this portable air conditioner, you can beat the heat without having to worry about the condition of the unit. As this has been in storage I would recommend giving it a good clean. I've tested it as far as I can and it blows out cold air as required not sure how to set it up properly as I don't have the instructions for it although they should be available online. I've included the hose which isn't in the best condition as it's missing the square section that attaches to the back of the unit from what I'm aware.