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A dripping AC need not be a part of your summer cooling experience. Yes, the evaporator coil in a residential central air conditioner condenses as much as 25 gallons of water out of the air every day as part of the cooling process. However, in a properly functioning unit, every drop is collected and then properly drained away.
Except when it isn’t. A dripping AC can inflict water damage on a house before it’s even noted by residents. Continuous moisture from air-conditioner leaks can also spawn the growth of toxic mold and mildew. Here are some basic facts about how a dripping AC happens.
Cracks in the drain pan. Located beneath the indoor air handler, the drain pan catches condensation generated by the evaporator coil. Many drain pans are plastic and may crack and leak after years of use. Replacing the AC condensate drain pan isn’t out of the range of a determined do-it-yourselfer. Alternatively, your HVAC contractor can handle the task for you.
Pan overflows. A drain line connected to the drain pan conveys the water into the house drain system. Clogs in the drain line can result from mold growth or other fungus inside the drain pan. Overflow and water damage occur quickly if the drain line is obstructed. Annual AC preventative maintenance typically includes checking the condensate drain flow and cleaning the drain pan when necessary. In addition, biocide tablets placed in the pan help prevent mold growth.
Coil issues. This is another source of potential water damage. Insufficient refrigerant charge or low airflow due to an obstructed air filter may cause the evaporator coil temperature to drop below freezing. Condensation turns to ice that often extends outside the limits of the drain pan. Every time the system cycles off, the ice melts and forms, enlarging puddles on the floor. Monthly air-filter changes, plus professional service to detect and repair refrigerant leaks, help keep the immediate area dry.
For more information about preventing and/or repairing dripping AC issues in Broken Arrow, contact the HVAC professionals at Air Assurance.