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Finding a puddle of water around your indoor air handler or a water stain spreading across your ceiling is a stressful discovery for any Foley homeowner. Air conditioners are designed to handle water — specifically, the humidity they pull from the air — but that water is supposed to exit the home safely. When an AC starts leaking inside, it usually points to a failure in the drainage system or a problem with the evaporator coil. Understanding the common causes can help you act quickly before minor moisture turns into major structural damage.
To understand why an AC leaks, you have to understand how it cools. Warm indoor air is blown across the cold indoor evaporator coil. As the air cools, the humidity in the air condenses into liquid water on the coil, much like water droplets forming on the outside of a cold glass of sweet tea. This water, called condensate, drips into a drain pan beneath the coil and flows out of the house through a PVC condensate drain line.During a typical Baldwin County summer, your air conditioner can produce several gallons of condensate every single day. If that water cannot exit through the drain line, the drain pan will quickly overflow, sending water into your attic insulation, ceiling drywall, or utility closet floor.
The number one reason for an indoor AC leak in Foley and Gulf Shores is a clogged condensate drain line. The warm, dark, and damp environment inside the PVC pipe is the perfect breeding ground for algae, mold, and bacteria. Over time, this organic growth forms a thick, gelatinous sludge that completely blocks the pipe.
When the line clogs, the water backs up into the drain pan. If your system is located in the attic, this overflow will soak the insulation and eventually break through the ceiling drywall. If the system is in a closet, it will flood the floor, potentially ruining flooring and baseboards.
Another common cause of indoor water leaks is a frozen evaporator coil. If your system has restricted airflow — usually due to a filthy air filter — or is low on refrigerant, the temperature of the coil can drop below freezing. The condensation on the coil turns to solid ice.When the system eventually shuts off, that massive block of ice melts rapidly. The sudden rush of water is often too much for the drain pan to handle, causing an immediate overflow. If you open your air handler and see ice on the copper lines or the coil itself, turn the system off immediately to prevent compressor damage and call a professional.
If you discover your AC leaking water inside, the first and most important step is to turn the system off at the thermostat. Do not continue running the air conditioner, as it will only produce more water. Next, clean up any standing water to protect your floors and place a bucket under any active ceiling drips.Do not attempt to clear a clogged condensate line with harsh chemical drain cleaners, as these can damage the PVC pipe and the drain pan. Instead, contact a licensed professional. GoneCoastal Plumbing and Air has the specialized equipment to safely clear stubborn drain clogs and inspect your system for underlying issues. Call us or book online to stop the leak and restore your comfort safely.
The most common cause is a clogged condensate drain line. When algae or sludge blocks the PVC drain pipe, water backs up and overflows the drain pan. A frozen evaporator coil that melts rapidly is another frequent cause.
No. Turn the system off at the thermostat immediately. Running the AC while the drain is blocked will only produce more water, increasing the risk of ceiling collapse, mold growth, and electrical hazards.
Annual professional maintenance that includes condensate drain clearing is the most effective prevention. Keeping your air filter clean also helps prevent the restricted airflow that leads to frozen coils and overflow events.
We offer 24/7 emergency services! Our team is ready and eager to assist you with any inquiries you may have. At Gone Coastal, nothing is beyond our reach.
