If the weather is cool, some people choose not to turn on the car AC at all. In fact, occasionally using the AC still has benefits to keep the system working.
The AC system consists of various components such as the compressor, refrigerant and seals which are designed to work periodically. Regular use of AC helps maintain lubricant circulation in the system and keeps its components from being idle for too long.
AC is also not just about keeping the cabin cool. This system helps reduce humidity in the air and can help remove dew on the glass under certain conditions. That's why the AC button is often used when the air outside feels cold.
So, that doesn't mean the AC has to be on all the time. But if your old car never used AC, occasionally activating it can be part of a simple maintenance habit.
