All brands · Mini-split troubleshooting

Indoor unit leaking water

What is going on

Water drips from the indoor head.

Likely causes

  • Clogged condensate drain line or pan
  • Head not level or drain line without slope
  • Dirty filters or coil causing freezing then thawing
  • Condensate pump failure where used

Check in this order

  1. Clean the filters
  2. Check that the indoor unit is level and the drain line slopes downward
  3. Clear the drain pan and drain line
  4. Check the condensate pump if one is installed
  5. Check for coil icing and low airflow

Applies to: Ductless mini-splits

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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.