Automotive A/C Service and Repair
The A/C is part of the climate control. There tis obvious heating and cooling, but it also dries the air and in most late models, it filter the air as well. Except for the coldest of tempertuires, the cooling opertes year round. A little more about it: The A/C operates at maximum cooling to dry the air, then the climate control adds heat to bring back to the desired temperature.
When reporting an issue, note as much as you can of how it's NOT operating as usual.