Yes, you can often fix minor AC water leaks yourself as a DIY project, provided the issue is a clogged condensate drain line. If the primary PVC drain line is blocked by algae and slime, you can easily clear it using a wet-dry vacuum at the exterior discharge pipe or by pouring a mixture of warm water and vinegar down the indoor T-pipe access port. However, if the leak is caused by a cracked drain pan, a refrigerant leak freezing the coils, or damaged ductwork insulation, you should call a licensed HVAC professional. Verification: Pour a cup of water down the cleanout port to verify it drains smoothly without backing up.
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