What should I do if my mini split is leaking water inside?

A mini split leaking water inside usually means the condensate drain is clogged or the indoor coil is dirty and the pan is overflowing. The most common cause is a blocked drain line that stops moisture from draining outdoors.

Turn the unit off to prevent water damage, then place a towel or pan under the leak. Our team handles this routinely for homeowners around Cheektowaga. A tech will clear the drain, flush the line, and clean the coil; these tasks are part of professional maintenance (drain cleaning and coil cleaning). If the unit was recently installed, a slight out-of-level mount can also cause spills, and we check that too. Steady dripping is urgent but not an emergency unless water reaches electrical parts or ceilings; don’t keep running it to “dry it out,” as icing can worsen.

• Clean the air filter to restore airflow.
• Check that the drain tube isn’t kinked or disconnected.
• Look for ice on the coil; if present, keep the unit off and let it thaw.
• Schedule service for a full drain flush and coil cleaning.

If water is near electrical components, leave the system off and call a professional right away.

Updated: 2026-06-05

Need help in Cheektowaga, NY? Call (716) 216-5332 or book online. "They installed a mini split and central air in our house in under 7 hours." — Caron K.