A mini split leaking water inside usually means the condensate isn’t draining, most often from a clogged drain line or restricted airflow. The most common trigger is a blocked drain after dust loads up on the filter and coil, causing water to spill instead of flow outdoors. Shut the unit off to stop the drip; most leaks are repairable and don’t require replacement. A technician insight: a slightly unlevel wall head can leak only on very humid days, then seem fine later. Our technicians service homes in the Burlington area and can diagnose the cause with a focused inspection and tune-up.
Steps you can take now:
- Clean or replace the indoor filter to restore airflow.
- Check the outside drain tube for kinks or algae and gently clear the tip.
- If you see ice on the coil, leave the system off until it thaws.
- If there’s a condensate pump, listen for failure or overflow and avoid running the head if it’s not pumping.
If water is near electrical parts or the ceiling is wet, keep the air handler powered off and call a licensed HVAC technician.
Updated: 2026-04-21
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