It doesn't matter what type of air conditioner it is, regular maintenance is essential to ensure it runs smoothly. Even if your AC appears to be in good condition, there may be problems that require attention. A trained technician could spot these issues and correct them before they become serious. Here are some signs your AC may need professional attention. Your energy bills are rising even though your AC isn't being used as much as usual. This could indicate that the AC is not operating as efficiently as it should. If the air isn't cooling as well as it used, this could be a sign that the AC isn’t running as efficiently as it should. It's best to have an AC technician inspect your AC if you are unsure. They will be able to tell you if everything is functioning as it should.