When it comes to the overall efficiency of an air conditioning system, it is also given by its operation and expenses. For example, it makes no sense to spend close to nothing on a system that is not efficient. Other than that, ignoring its problems will also ruin its efficiency. If the system is under stress due to problematic belts or malfunctioning parts, it will obviously require plenty of extra power to run smoothly. With these ideas in mind, maintenance should be one of your main priorities. It also affects longterm costs by preventing costly repairs and even replacements. Visit http://relenergy.com and leave your system in expert hands.