If you are going to invest in an air conditioning system for your home a great choice you can make is to get one of the portable air conditioning units that are currently available on the market. They are a great choice because they can be used anywhere, in any room in your home, and in any spot. Plus when winter hits you can very easily just store it in the garage or a closet. Then when you need it just pull it out and in minutes it can be installed. All air conditioning units' even portable ones use water to cool the air in a room. That is why the second priority is for a way for the water to escape.