Reasons Why Your Ductless Mini-Split Is Leaking Water

Mini-split systems provide homeowners with an energy-efficient means to keep their homes at a comfortable temperature. These systems generally have much longer life spans than most conventional temperature control systems, but they may experience potential issues such as leaking at some point. To get your system working properly again and to prevent water damage, you’ll need to get to the bottom of the issue. Here are some of the main reasons why your ductless mini-split is leaking water.

A Blocked Drain Line

There are several different reasons why your ductless mini-split may leak water, but a clogged drain line is generally the most common. When a mini-split system operates, the interior unit’s coil pulls moisture from the air. Also known as the condensate line, the drain line serves the important purpose of transporting the water that has accumulated in the drain pan from the indoor unit to the outdoor unit. If the drain line becomes clogged, it won’t have the ability to drain the water outside. With nowhere else to go, the water will drip inside the house instead.

To prevent leaks, prevent your mini-split’s drain line from clogging by conducting regular maintenance and periodically checking and cleaning the line when necessary.

A Damaged Drain Pan

Another potential cause for your leaking mini ductless air conditioner is a damaged drain pan. Drain pans can incur damage in several ways, from developing rust over time to getting dropped and cracking. Because the drain pan holds moisture that condenses out of the air in your home, damage to this component will likely cause any water inside of it to leak out. In the case of a damaged drain pan, you’ll likely need to hire a professional to replace the component and get your system working properly again.

A Filthy Filter

A dirty air filter can cause a host of potential problems in a mini-split system, including leaking. When an air filter gets too filthy, dust and dirt may build up on the coils of the mini-split’s indoor unit. As a result, the airflow throughout the system reduces, and the coils may freeze. When the coils warm back up, the frost and ice will melt and drip down your wall or onto your floor. To prevent leakage from occurring, make sure to change your mini-split’s filter in accordance with your system’s guidelines.