HVAC

BuildingWrench repair guide

HVAC

Mini-Split Leaking Water Indoors? Drain, Pan & Coil Checks

Water dripping from a wall-mounted mini-split usually comes from a clogged drain, dirty pan, poor slope, disconnected hose, frozen coil, or condensate-pump issue.

Last reviewed 2026-09-12 · General facility-maintenance information, not a substitute for site procedures, manufacturer instructions, codes, or qualified professional judgment.

Routine facility fixSkill: Beginner-friendlyFormat: Diagnose → Fix → Test
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Quick answer

Water from a wall-mounted mini-split usually points to a condensate problem: a clogged drain, dirty pan, poor hose slope, disconnected line, frozen coil, or failed condensate pump. Start with the drain path and visible water source.

Safety boundary

Do not bypass safeties, open refrigerant circuits, or perform energized electrical diagnosis unless trained and authorized.

Full troubleshooting steps are in Pro

The safety boundary, quick answer and stop-work conditions above stay free. Pro opens the likely causes, symptom table, step-by-step procedure and preventive maintenance for this guide.

Stop and call a licensed professional when

  • Condensate pump is hardwired and not operating
  • Drain is concealed and inaccessible
  • Ice returns
  • Electrical components are wet

Mistakes, FAQ, parts and tools

Pro opens the rest of this guide: common mistakes, field FAQ, the parts list, and the tools for the job.

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