Top 3 Reasons Your AC Unit Leaks and How to Avoid Future Leaks

Top 3 Reasons Your AC Unit Leaks and How to Avoid Future Leaks

Top 3 Reasons Your AC Unit Leaks and How to Avoid Future Leaks

Temperatures are rising, and when your air conditioning is not working as expected tempers may rise as well. Not to worry though! If you’re struggling with a pesky AC unit that continues to leak water in places that it shouldn’t we’ve rounded up some tried-and-true ways to helpyou keep your cool—literally and figuratively.

First things first:

Make sure that you’ve turned off power to your unit, and unplug it from your wall outlet! Water and electricity don’t tend to mix, and we don’t need you get getting hurt.


Using an absorbent towel soak up any remaining water that may be around the unit. Now that your AC unit is safe to inspect, look closely and do your best to isolate where the water is coming from. Knowing the source of the problem makes it that much easier to diagnose and fix!

We’ll walk you through the 3 most common reasons AC units leak, and lastly, leave you with a tip on how to ensure leaks are a thing of the past.

1. Clogged Condensate Drain Line

There’s not worse (besides a fully non-functioning AC unit) that hot and sticky air. After all, that’s one of the main reasons we’ve love an air-conditioned space so much.

Units cool the air in two ways: 

  • By pulling out the warm air.
  • Reintroducing the previously warm air at much cooler temperatures.

This process involves the condensate drain line, and it’s what helps pull the excess water out of the air resulting in cooler spaces. As you can imagine, the condensate drain line works overtime on those hot days, and it can sometimes become clogged with dust, dirt, or other debris.

You can check for blockages yourself by removing the back of your AC unit and locating the condensate drain before  removing any blockages that you see.

2. Frozen Evaporator Coil 

Frozen Evaporator CoilWe’re no strangers to working ourselves to the bone, and truthfully, AC units can do the same. If they’ve ran too long or set at too low a temperature the evaporator coils—what cools the air—can become frozen, and we all know what happens when frozen things melt. They create excess water.

If your unit is indeed frozen over, leave the unit unplugged and allow the unit to thoroughly thaw out. Friendly reminder that AC units are designed to keep your space at ~20 degrees cooler than outside temperatures, and the best way to avoid a frozen evaporator coil is to keepthis range in mind.

3. Window Unit Not Properly Installed

Window not installed properlyLeaks can happen just about anywhere, and when you’ve not properly installed or sealed your window AC unit all that rain that’s outside will find its way inside rather easily. Luckily, this is the easiest one to avoid!

Always ensure you follow manufacturer’s directions for installation, and don’t be afraid to phone a friend or hire help if you’re unsure how to install yourself. Spending a few extra dollars for a correct install will save you time and money down the road.

Say Goodbye to Water Leaks

Midea UIf you asked us though, the best way to ensure water leaks from your AC unit are a thing of the past is to upgrade your unit to the Midea U-Shaped Air Conditioner.  It's unique design ensures that all the water stays outside your home while allowing for fully functionality of your window thanks to its innovative quick snap bracket.

Not sold yet? Learn more about Midea’s ultra-quiet air conditioning units, and see why consumers from around the world are singing our praises.