Air conditioners are a lifesaver during the hot summer months, but they can also be a source of frustration if they start leaking water. A leaky air conditioner can cause damage to your home and furnishings, and it can also be a sign of a bigger problem with your AC unit.
In this article, we will explore the common causes of air conditioner water leaks and what you can do to fix them. We’ll also discuss the importance of regular maintenance to prevent leaks from occurring in the first place. By understanding the causes and solutions for air conditioner water leaks, you can keep your AC unit running smoothly and avoid costly repairs.

Causes of air conditioner leak water
There are several common causes when air conditioner leaks water:
1. Clogged condensate drain:
The condensate drain is responsible for removing excess moisture from the air inside your home. If the drain becomes clogged, water can build up and leak from the air conditioner.
Faulty evaporator coil: The evaporator coil is responsible for absorbing heat from the air inside your home. If the coil becomes damaged or is not functioning properly, it can cause water to leak from the air conditioner.
Damaged condensate pan:
The condensate pan is located underneath the air conditioner and is responsible for collecting any excess water that is produced during the cooling process. If the pan becomes damaged or is not properly installed, it can cause water to leak from the air conditioner.
Incorrect installation:
If the air conditioner was not installed correctly, it can cause water to leak from the unit.
Age of the unit: As air conditioners age, they can develop problems that can cause water to leak from the unit.
Incorrect air flow:
If the air flow in your home is not balanced properly, it can cause water to leak from the air conditioner.
Refrigerant leak:
If the refrigerant in the air conditioner is leaking, it can cause water to leak from the unit.
It’s important to address any leak from your air conditioner as soon as possible in order to prevent further damage and ensure that your unit is functioning properly.

Why is My Air Conditioner Leaking Water?
- Pooling water around the unit: If you notice water pooling around the base of your air conditioner, it could be a sign of a leak.
- Musty smell: If you notice a musty smell coming from your air conditioner, it could be a sign of mold or mildew growing as a result of excess moisture from a leak.
- Decreased cooling efficiency: If your air conditioner is leaking water, it may not be able to cool your home as efficiently as it should.
- Water stains on walls or ceiling: If you notice water stains on your walls or ceiling, it could be a sign that your air conditioner is leaking water.
- Increased humidity: If the air inside your home feels more humid than usual, it could be a sign that your air conditioner is not removing excess moisture from the air as it should.
- Strange noises: If you hear strange noises coming from your air conditioner, it could be a sign that there is a problem with the unit, such as a leak.
How to fix an air conditioner leak?
- The first thing you should do is check the condensate drain to see if it is clogged. A clogged drain can cause water to build up and leak from the air conditioner. To clean the drain, locate the drain line and use a small brush or pipe cleaner to remove any debris.
- Look for any damaged parts that may be causing the leak. This can include the evaporator coil, the condensate pan, and the connecting pipes. If you find any damaged parts, you may need to replace them in order to fix the leak.
- Make sure that the air flow in your home is balanced properly. If the air flow is not balanced, it can cause water to leak from the air conditioner.
- If the refrigerant levels in your air conditioner are too low, it can cause water to leak from the unit. You will need to have a professional HVAC technician check the refrigerant levels and refill the system if necessary.

When to call a professional?
- If you are unable to determine the cause of the leak, it’s best to have a professional HVAC technician inspect the unit and diagnose the problem.
- When the leak is severe and you are unable to fix it yourself, it’s important to call a professional to repair the unit as soon as possible in order to prevent further damage.
- If you are not comfortable working on your air conditioner or are not familiar with its components, it’s best to call a professional to repair the unit.
- You have tried to fix the leak but the problem persists, it’s important to call a professional HVAC technician to diagnose and repair the issue.
It’s important to address any problems with your air conditioner as soon as possible in order to prevent further damage and ensure that your unit is functioning properly.
A professional HVAC technician will have the skills and expertise to properly diagnose and fix the problem, ensuring that your air conditioner is running efficiently and effectively.
How to Fix Air Conditioner Leaking Water Outside?

If your air conditioner is leaking water outside, there are a few things you can do to fix the problem.
First, check to see if the unit is properly installed and level. If it’s not, then you’ll need to adjust it so that it is.
Next, check the condensate drain line to make sure it’s clear and unobstructed. If there’s any build-up or blockages in the line, clear them out so that water can flow freely through.
Finally, inspect the unit itself for any cracks or leaks. If you find any, seal them up with caulk or duct tape.
By following these steps, you should be able to stop your air conditioner from leaking water outside.
Water dripping from split ac indoor unit
If you have a split AC unit, you may have noticed water dripping from the indoor unit. This is normal and is caused by condensation. The water is not harmful and will not damage your AC unit.
However, if the dripping is excessive, it can cause water damage to your home. If you are concerned about the amount of water dripping from your AC unit, you can contact a professional AC repairman to check it out.
FAQs – Most asking question & answer about AC’s Water Leaking!
Does Air Conditioner Leak Water?
Yes, AC usually leaks water. But depending on where it comes from, you may say it is normal or dangerous.
Is My Ac Supposed To Leak Water?
It is not normal for an air conditioner to leak water. If your air conditioner is leaking water, it could be a sign of a problem that needs to be addressed.
Why is My Air Conditioner Leaking Water?
Your air conditioner is likely leaking water due to a clogged drain line, a damaged drain pan, or a problem with the indoor evaporator coil.
When Air Conditioner Leaks Water?
When an air conditioner leaks water, it may be caused by a clogged drain line, a malfunctioning drain pan, or a problem with the condensate pump.
How Do I Stop My Air Conditioner from Dripping?
If your air conditioner is dripping, there are a few things you can do to try and stop it. First, check the unit for any debris or leaves that may be blocking the drain line. If you find anything, remove it and see if that stops the dripping.
If not, you may need to clean out the drain line with a vinegar and water solution (1 part vinegar to 3 parts water). Pour this into the drain pan and let it sit for 15-20 minutes before draining it out. You can also use a plunger to try and unclog the drain line.
Can I Still Use My Ac If Its Leaking Water?
No you shouldn’t! It’s important to take action immediately and figure out the root of the problem. If left unchecked, a leaking AC can cause major damage to your home or office.
Final Verdict
An air conditioner can leak water for a variety of reasons, including clogged or blocked drainage channels, a faulty or improperly installed drainage pan, and issues with the air conditioner’s cooling coils. In some cases, the cause of the leak may be as simple as a dirty air filter, which can restrict air flow and cause the air conditioner to freeze up and start leaking.
To fix an air conditioner that is leaking water, you may need to clean the air filter and check the drainage channels and pan for blockages. You may also need to check the cooling coils and ensure that they are functioning properly. If the leak persists after these steps, it may be necessary to call a professional HVAC technician to diagnose and repair the problem.
In the meantime, it is important to keep the area around the air conditioner dry and to turn off the unit if the leak is severe. Continuing to use an air conditioner that is leaking water can cause damage to the unit and potentially create a safety hazard.
Thanks for the suggestion to consult an air conditioner professional whenever you see signs of water leaks within your AC unit. I have a friend who wants to try investing in a cooling unit in preparation for summer. I think finding a local air conditioning services expert can help him avoid future issues with his unit!
Thank you, Zachary that you found this article helpful.