01The Top 5 Causes of AC Indoor Water Leaks
Clogged Drain Line: Fungal sludge and dust block condensate flow, causing the indoor tray to overflow.
Dirty Mesh Filter: Restricted airflow starves coils, dropping temperature below freezing and melting ice into water surges.
Low Refrigerant Gas: Under-charged refrigerant causes uneven coil freezing, which drips off coil edges.
Damaged Drain Pan: Cracks or rust in plastic condensate collector trays.
Tilted Indoor Unit Mounting: Incorrect spirit-level installation causes water to pool towards the wrong corner.
02Safe Homeowner Inspection Steps
Turn off the AC power isolator switch immediately. Carefully open the front panel and pull out the mesh filters. Wash them under water and verify that the external drain pipe end outside the building is not buried in mud or squashed under heavy objects.
