You may not be thinking about it now, but sooner or later, there is nothing that you will want to do more than have your old and rusty air conditioning repair and replacement services done, for a newer and better version. The hot summer seasons are especially the times when you use your AC the most, and if yours is old and rusty, then there is no telling when it might break down completely and fail to start. And you do not want to have an AC that is not working in the hot summer period.