The trick is fund a user interface that says to be family friendly. If you go into he store to buy the unit, then you should bring the whole family and see if the understand how it works. IN n order for you to enjoy the benefits of the profitable unit then you must understand how to use it. The final thing you need to consider before buying a unit is what exactly is it made out of. Choosing between metal plastic might not seem like a huge decision, but it is actually one of the biggest choice you will have to make. Plastics for one is not as durable or a metal one, but the pro of having a plastic unit is that is is by far easier to move around and use.
The main purpose of getting a portable AC unit is the fact that you can move it around and out it any where in the house. If you plan to move it around a lot then you might want to get one that is lighter and easier to move. On the other hand, if you buy one that is mostly made out of metal then caring it around might be more of a process. It will still be portable and relatively easy to move, the only problem will be that the unit might be a little heavier then that of a plastic unit. The plus of purchasing a metal unit is that it is a lot more less likely to get a leak from wear and tear. So while the plastic is lighter and easier to move, the metal is more durable and likely to last longer.