Have you ever stopped to listen to your home’s air conditioning system as it runs? We recommend doing this occasionally, since it can sometimes identify when there’s a malfunction in it (you don’t want to hear grinding or hissing noises, for example). One sound you’ll occasionally hear that isn’t an indication of a problem is dripping water. Your air conditioner doesn’t use water to cool down the air—only special evaporative coolers do that—but water is a byproduct of how it works.
And where there’s water, there can be water leaks. You might see water dripping from your air conditioner at some point. It usually means the air conditioner must be repaired. We’ll explain why.
Why Is There Water Inside Your AC System?
An air conditioner works by evaporating cold refrigerant along an indoor coil. As the refrigerant evaporates, it draws in heat, and this is what cools down the air before it’s blown into the ventilation system. (The heat absorbed is exhausted outside when the refrigerant completes its cycle and condenses.) As the refrigerant evaporates, it also causes moisture from the air to condense along the coil. This condensate water is what you hear dripping inside the air conditioner.
Common Reasons Your AC Is Leaking Water
Where does this water drawn from the air go? It can just drip out of the air conditioner: that would end up damaging the inside of a house and creating higher indoor humidity. An AC is constructed so the water drips down into a shallow condensate pan. A pump then draws the water from the pan through a condensate drain and moves it outdoors.
If you see water leaking from your AC, it usually means the condensate pan is overflowing or it has come loose from the drain and is letting the water fall right through it.
Because of all the moisture that passes through the condensate drain, mold and algae might start to develop inside it—and this can be enough to clog the drain. This will quickly cause the pan to overflow, since it’s only about an inch deep. Another reason for the overflow is if the condensate pump breaks from a burnt-out motor and doesn’t draw water from the pan. In either case, you’ll need to have a professional handle cleaning the drain or replacing the pump motor.
Corrosion in the condensate pan or drain is the principal cause of the drain coming loose and leaving a hole for water to drip through. Fixing this also requires a professional. You may need a new drain and condensate pan if the corrosion is bad enough.
Please don’t ignore any water drip from your AC! An overflow can cause the air conditioner to shut down, and any increase in the humidity levels inside the air conditioner can create mold in the system. If you need fixes for your air conditioning in Benton, LA, reach out to our HVAC technicians. We have 24-hour emergency service available.
Frequently Asked Questions
Question: Why is my air conditioner leaking water?
Answer: Your AC may be leaking water because moisture is not draining away correctly. Common causes include a clogged condensate drain, a dirty evaporator coil, a broken condensate pump, or a cracked condensate pan. The issue should be checked quickly because excess water can damage the system and nearby areas.
Question: Is water leaking from my AC dangerous?
Answer: Water leaking from your AC should not be ignored. Even a small drip can lead to overflow, system shutdown, humidity problems, or mold growth inside the unit. It may also point to a clogged or damaged part that needs professional attention before the problem gets worse.
Question: Can a clogged drain line cause my AC to leak water?
Answer: Yes, a clogged condensate drain is one of the most common reasons an AC leaks water. Dirt, dust, algae, or other buildup can block the line, forcing water to back up and spill out. A technician can clear the blockage and check whether the drainage system is working properly.
Question: Why does my AC leak water when the evaporator coil is dirty?
Answer: A dirty evaporator coil can interfere with the normal condensation process. Instead of water dripping cleanly into the condensate pan, moisture can collect on grime and fall outside the proper drain path. Cleaning the coil can help restore proper drainage and improve system performance.
Question: When should I call an HVAC technician for an AC water leak?
Answer: You should call an HVAC technician if water is pooling around the unit, the AC shuts down, the leak keeps returning, or you notice high humidity or musty odors. Professional service is also important if the problem involves a pump, drain pan, or internal component.
Call the Doctor of Home Comfort today! Hall’s Heating, Air Conditioning & Refrigeration serves Shreveport and the surrounding areas.
