What is the purpose of the AC drain line outside and how can it be maintained to prevent clogs and leaks?

The purpose of the AC drain line outside is to remove excess moisture that builds up during the cooling process. To prevent clogs and leaks, the drain line should be regularly checked and cleaned to ensure proper drainage. This can be done by using a wet/dry vacuum to remove any blockages or by pouring a mixture of vinegar and water down the line to clear out any buildup.