Fixing the problem often falls in the do-it-yourself category for a handy type of person.
Of course, if in doubt, call a professional.
What Causes a Mini Split to Leak and Drip Water?
- Clogged Condensing Drain Line (Most Common)
- Low Refrigerant
The inside wall unit has a coil that pulls moisture from the air as it cools.
Depending on how humid it is, the moisture builds up and must drain out, or it will leak.
A drain line carries this moisture outside which is usually a small drip.
If the drain line becomes clogged up, it can not drain the water leading to the water dripping inside a home.
In some cases, if the system has a refrigerant leak, the inside condenser will leak drastically, which is a separate issue from a clogged drain line.
If the mini split is leaking water and not cooling correctly, it may be low on refrigerant.
If the mini split is cooling and leaking, the drain line is likely clogged.
Items Needed to Fix a Mini Split Leak
Some basic tools will be needed to repair the problem.
The above list is a general idea of what will be needed, with the main goal to remove the outer casing and get to the drain line.
Every unit will be slightly different in how they come apart and what tools are needed.
Units can vary in build and component location, but the same principle applies.
How to Fix a Mini Split Leaking Water
- Turn Power Off to the unit.
- Open the unit and remove the filters.
- Remove the screws holding the casing.
- Remove the outer casing.
- The water line is usually at the bottom. Remove any screw holding it in place.
- Pull the water line down and unwrap any tape holding it together.
- Have a bucket ready to catch any water and unplug the hose.
- Using a vacuum, suck both sides of the line out, removing any debris that is blocking it.
- Once the debris is removed from the line, hook it back up and tape it to hold it together. Put all the parts back together and test the unit.
The above are the basic steps to fix a leaking mini split unit.
Keep in mind that if your unit is leaking a lot of water and not operating correctly, it may be a separate problem.
For example, if the unit has a bad drip, is blowing out water, and stops cooling after a short while, it likely is low on refrigerant.
Usually, a leaking unit is only the drain line clogged, but in some cases, it can be other factors.
While the build and removal of the outer casing may vary between units, the basics still apply, with the drain line needing to be unclogged.
Usually, this is not a difficult job, but if you have any doubt, call an HVAC tech.