Different regions feature varying levels of moisture during the summer. Some areas experience intense humid heat while in others they get dry heat. Many AC cooling systems function at their prime depending on how moist the region is while they fail in others. This is especially the case with window air conditioning units since they tend to create moisture the higher the humidity in the region, which makes the atmosphere in the house uncomfortable. The central AC system, on the other hand, fits into any environment like a glove without any issues to its performance.
If your system is failing to perform its air conditioning duties adequately, then its ability to heat your home once winter comes by should also be up for question. Even if it is still running, if you have the traditional baseboard kind, it is most likely bound to cost you a lot to keep it running. Additionally, you may have to deal with inconsistent temperatures that bring about more discomfort than comfort.
If you have trouble coming to a decision, you can request the input of professional HVAC cleaning companies.