How To Fix Air Conditioner Leaking Water
February 2024

How To Fix Air Conditioner Leaking Water

When your air conditioner starts leaking water outside, it can be a sign of underlying issues that need attention. To address air conditioner leaks outside, begin by identifying the air conditioner leaking issue, commonly caused by a clogged condensate drain line or a dirty air filter obstructing airflow. 

Clean the drain line using a vacuum and bleach-water solution to prevent future blockages. Seal any leaks in air ducts to stop air escape and subsequent condensation. 

Finally, schedule regular HVAC maintenance services with a professional HVAC technician like Waynes Heating & AC to clear the outdoor unit area and prevent future leaks.

In this blog, we've got you covered with simple steps to fix an air conditioner leaking water outside to keep your home cool and comfortable.

Steps To Fix Air Conditioner Leaking Water Outside

Identifying the Problem

Check if the condensate drain line is clogged, as this is a common cause of leaks. You can also inspect the air filter for dirt and debris, which restricts airflow and leads to condensation buildup.

Cleaning the Condensate Drain Line

A clogged condensate drain line is often the culprit behind air conditioner leaks. 

To fix this, locate the drain line near the outdoor unit and use a wet/dry vacuum or a pipe cleaner to remove any blockages. 

Once the line is clear, pour a mixture of bleach and water down the drain to prevent future clogs and kill any mold or algae growth.

Replacing the Air Filter

A dirty air filter can block airflow, resulting in the freezing of the evaporator coil and eventual water leakage outdoors. 

Regularly inspect the air filter and swap it out if it's grimy or blocked with dust and debris. 

This straightforward maintenance chore can enhance your air conditioner's effectiveness and stop leaks.

Inspect The Refrigerant Lines

Another possible cause of air conditioner leaks is damaged or improperly insulated refrigerant lines. 

Check the lines for any signs of wear or damage, such as cracks or leaks. 

You should also ensure that the lines are properly insulated to prevent condensation buildup and water leakage outside.

Check The Drain Pan

If your air conditioner has a drain pan, check it for cracks or holes, causing water to leak outside. 

Replace the drain pan if necessary, and ensure it is appropriately positioned and secured to collect condensation from the evaporator coil.

Adjust The Slope of the Condensate Drain Line

The condensate drain line should have a slight downward slope to allow water to flow away from the air conditioner. 

If the line is not sloped correctly, water may pool and leak outside. Adjust the slope of the drain line as needed to ensure proper drainage and prevent leaks.

Preventing Future Leaks

Once you've fixed the problem, take preventive measures to avoid future air conditioner leaks. Schedule regular HVAC maintenance services checks with a professional HVAC service provider like Waynes Heating & AC to inspect and clean your system, including the condensate drain line, air filter, and refrigerant lines. 

Check Sealing Leaks

Leaky air ducts allow cold air to escape and warm air to enter, leading to condensation buildup and water leakage outside. 

Examine the ductwork thoroughly to identify any indications of leaks or harm, such as loose connections or punctures. 

Use duct tape or mastic sealant to seal any leaks, enhancing your air conditioner's efficiency and preventing potential leakage issues.

Final Thoughts

All in all, dealing with an air conditioner leaking water outside can be concerning, but with the right approach, it's manageable. By following the steps discussed above to fix air conditioner water leaking outside, including checking for clogged drain lines, cleaning the condensate drain line, inspecting the condensate pump, and replacing the air filters, you as a homeowner can effectively address the issue and prevent further damage to their HVAC system and property.

Fixing your air conditioner's water leakage outside doesn't have to be complicated. By following the solutions discussed above, you can identify and address the underlying causes of leaks and keep your home cool and comfortable all summer long. 

If you're unsure how to fix the problem or need assistance, don't hesitate to choose none other than the leading HVAC solutions provider, Waynes Heating & AC.

Frequently Asked Questions

Q1: How do I stop my air conditioner from leaking water outside? 

A1: To stop your air conditioner from leaking water outside, check for clogs in the condensate drain line, ensure proper insulation on the refrigerant lines, and clean or replace the air filter regularly.

Q2: Why is my AC draining so much water outside? 

A2: If your AC is draining a lot of water outside, it could be due to a clogged condensate drain line, dirty air filter, or improper HVAC installation. Try cleaning the drain line and replacing the air filter to see if it resolves the issue.

Q3: Why does water come out of my AC outside the unit? 

A3: Water coming out of your AC outside unit is typically a sign of normal operation, as it is the result of the condensation process. However, if you notice excessive water or leaks, it could indicate a problem with the condensate drain line or refrigerant lines that may need to be addressed.

Q4: Is it safe to run AC when water is leaking?

A4: It is generally safe to run your AC when water is leaking outside, but you should be aware of how to fix air conditioner water leaking outside to prevent potential damage to your system or property. To resolve the issue, check for clogs in the condensate drain line and ensure proper insulation on the refrigerant lines.


My A.C went out over the weekend and its fixed today. The service was fast and technicians are very knowledgeable. I would recommend Wayne’s over any other A.C company in Blairsville or surrounding areas. Thanks again for keeping my family cool in this summer heat!

- Crystal Cox