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What Should I Do If My AC Is Leaking Water?

May 5, 2022 | Blog

Unfortunately, home repairs, like an HVAC leak, are unavoidable. Moderate condensation during heavy summer use is normal, but water leaking from the unit itself needs attention right away. Even if it seems like a small trickle, it can quickly develop into a much larger problem for the system and your property.

Our team of experts at Southern Air South Louisiana, wants you to be prepared for this situation by knowing what the cause of your AC leak could be and what to do when you notice it.

Your AC Is Leaking? Turn It Off!

If you find that your air conditioner is leaking water, turn it off immediately and schedule a service call. Most of the time, the cause of a leak is minor but should be addressed ASAP so that it doesn’t affect the unit’s performance or damage your home.

Common Causes Of HVAC Leaks

Frozen Evaporator Coil

To process and cool air, the evaporator coil in your unit needs liquid refrigerant flowing through it as air reaches it. When refrigerant levels run low the pressure inside the condenser lowers too, which can cause a leak. Coils without enough refrigerant cannot cool hot air, but will continue trying to do so until it freezes up. As the coil melts, it appears in the form of a leak.

If the air your AC is pushing into your home is not as cold as it usually is, it may need refrigerant. And if you can hear a hissing or bubbling sound coming from inside the unit, you probably have a leak.

Drain Line Clog

The moisture collected in your unit during the dehumidification process leaves through the condensate drain line. As debris, dirt, mold and algae also pass through the line, they will stick to the edges of it, building up over time.

Eventually, that gunk will clog the drain line, if not cleaned. When a blockage in the line prevents condensation from emptying out of the condenser, it will back up within it. As that water collects, it spills into the condensate drain pan which, eventually, will overflow and leak out of the unit.

If your system has shut off and you cannot restart it, check your drain line for any clogs. Newer air conditioners have an automatic shut-off when they detect a blockage, protecting the unit and your home from water damage.

Clogged Air Filter

The evaporator coil needs access to warm air to counter the cold refrigerant in it used to push out cool air. A dirty filter restricts airflow, making your system work harder until it eventually completely blocks any air from flowing through. This prevents the coils from absorbing heat, so the coil and refrigerant will get so cold that they freeze.

Air conditioners with frozen coils will not be able to produce cool air and drip water as the coil melts. Once the drip pan fills and overflows, that water will leak out of it.

Most manufacturers recommend changing your AC filter at least once every 90 days. When your unit runs more often, like during the summer, it collects dust and dirt faster, so should be changed more often. If your unit continues to leak after changing the filter and cleaning air vents, it might need refrigerant.

Drain Pan Damage

The condensate drain pan located below the evaporator coil is designed to catch condensation from it as it drips. Air conditioners more than 15 years old often deteriorate and show signs of aging, like a cracked or rusted drainage pan.

Once your drain pan starts leaking water into unwanted areas, the best solution is to replace it with a new one that has no corrosion and is uncompromised.

HVAC Maintenance And Repair Services

Don’t panic if you realize that your AC unit is leaking water — contact Southern Air South Louisiana immediately to schedule a repair call! Our technicians’ same-day emergency services make them prepared to resolve any of your HVAC issues, whether it’s refilling refrigerant, removing blockages or replacing drain pans. We are dedicated to serving Jeanerette and the surrounding areas with the highest standards in the industry, so you can depend on us to get the job done right.

Call us today to book a tune-up, service call, or to learn more about our Ironclad Guarantee!

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What Our Customers Are Saying

Prompt Service

Arrived promptly. Clearly discussed with me the issue with my unit. Compressor is going bad. Was able to give me quotes for work to be done, when and finance options available including 0% interest for 3 years of I were to replace entire outdoor unit.

Kira R.

Highly Recommended

Service is 1st rate as always. I’ve always been satisfied with Southern Air Heating and Cooling South Louisiana. From installing a new heating and cooling system to routine maintenance, this is the company to choose. Highly recommended for all your heating and cooling needs.

Stacie L.

Very Efficient

Very efficient. I called at 245pm on a Friday, was told the tech would be at my residence at 4, he was here by 3! He quickly identified and thoroughly explained the issue. Will have to make an appointment for the repairs, however I am confident the job will be done well

Crystal M.