Is Your Air Conditioning Leaking Water? Here Are 8 Possible Causes

An air conditioner (AC) keeps your house cool and comfortable by pulling heat and humidity from the air. As the AC extracts humidity from the air, it generates condensate, or water, in your furnace or air handler. This water is typically kept in a drain pan and moved through piping into your home’s drain system. 

As a side effect, damaged pipes or sludge buildup can cause the piping to become clogged. When this happens, water floods the drain pan within your furnace or air handler. It can then leak into your home. This is namely troublesome if your furnace or air handler is located in the attic or above a finished ceiling. 

In most homes, building codes necessitate a secondary or safety drain pan that is located underneath the furnace or air handler. This secondary drain pan has piping that is routed to the outside of the home. Typically, the outlet of the pipe is found above the outside of a window so it’s more noticeable if water starts draining from this pipe outlet. It is not normal for this to occur. If you see water leaking from piping on the outside of your home, this is likely an indication the primary drain is backed up and water is now draining from the safety drain pan. 

Here are the most frequent explanations for why your AC is leaking water and how to take care of the issue. Some homes can also use a safety device that should automatically turn off your AC in the event the drain becomes clogged. In this case your system will stop cooling except if the drain is cleared of any obstructions. Regardless, if you spot water leaking, be sure to set your thermostat to “off” to stop any additional water damage and get in touch with a Service Experts Heating, Air Conditioning & Plumbing service provider to correct the issues. 

Leaking air conditioners frequently demand professional servicing, which is why we’re here to assist you at Service Experts Heating, Air Conditioning & Plumbing. We proudly deliver Expert air conditioning repair across the U.S., backed by a 100% Satisfaction Guarantee.* 

1. Condensate Drain Is Blocked 

When hot, humid air moves over the evaporator coil, water collects on the cold metal surface. In the end, the water drains into a pan underneath the indoor coil inside the furnace or air handler. As the cooling sequence occurs, the condensate flows out of the pan and into drain piping before the pan overflows. 

However, mold, mineral deposits, dirt and other debris can clog the drain. This stops the water from moving away correctly. Leave the unclogging process to an Expert like Service Experts Heating, Air Conditioning & Plumbing to make sure it’s done properly and without causing further damage. Service Experts can also put in a safety device that will automatically switch off your AC just in case the drain becomes clogged again sometime after, thus minimizing water damage in your home. Of course, scheduling maintenance on your AC will help keep your condensate drain flushed and unobstructed. 

2. Drain Line Is Disconnected 

While somewhat rare, the drain line connection to the drain pan may become loose or disconnected. This can be the cause if someone is working near the unit or when swapping out the air filter. AC leaks might occur when the drain line is lose from the pan. Take a look inside your AC to find out if the drain line is still fully connected to the coil drain pan. If it is no longer connected, we encourage calling an HVAC technician to repair this issue right away. Request an appointment with Service Experts Heating, Air Conditioning & Plumbing today. 

3. Condensate Pump Isn’t Working 

Some air conditioners need a condensate pump to efficiently drain the water. These pumps are required when the home’s drain system is found above the AC unit. Even if the drain is unobstructed, water can build up in the pan and leak out if the condensate pump is not functioning. First, make sure that the pump is being powered. If that’s not the problem, the AC leak might be due to a broken condensate pump. You should contact an air conditioning contractor like Service Experts Heating, Air Conditioning & Plumbing to resolve the issue. 

4. Evaporator Coil Is Dirty or Cracked 

If you see little drips instead of a bigger puddle nearby the outside of your furnace or air handler, water may be bouncing off the evaporator coil rather than properly moving into the drain pan and condensate line. This can happen if the coils are dirty, or if holes in the insulation surrounding approach to prevent the evaporator coil from going downhill is to keep up with annual air conditioning maintenance using a Service Experts Heating, Air Conditioning & Plumbing membership. 

5. Low Refrigerant Level 

If you notice a leak and the AC isn’t cooling like it’s supposed to, the refrigerant level may be insufficient due to a leak. Air conditioners depend on refrigerant to create cold air, so getting it looked at regularly during seasonal maintenance is highly beneficial for the longevity of your unit. Without adequate refrigerant, the evaporator coils might freeze over and cause the drain pan to overflow as they thaw. Opposite of some expectations, your AC does not need to be replenished unless there is a leak. The system is sealed and recharging is only required when a leak appears in the system. Call Service Experts Heating, Air Conditioning & Plumbing as soon as you can to take care of AC refrigerant issues quickly. 

6. Dirty Air Filter 

Your air conditioner’s filter needs to be changed regularly to ensure proper airflow. Without adequate ventilation, the evaporator coils can become too cold and freeze. The evaporator coils will then thaw, causing excess water to collect in the drain pan—sometimes starting an overflow. To resolve this, try changing your air filter. If the problem persists, additional repairs will sometimes be needed. Luckily, HVAC technicians from Service Experts Heating, Air Conditioning & Plumbing are here to serve you, ensuring the problem gets solved. 

7. Outdoor Temperature Is Too Cold to Run AC 

Air conditioners are made to provide enough cooling for warm weather. Starting your AC when outdoor temperatures are 60 degrees Fahrenheit or lower could cause the evaporator coils to freeze. Once thawed, the water and ice will drop off the evaporator coils and potentially create an overflow thanks to ice blocking the drain pan opening. If a water leak persists, schedule a Service Experts Heating, Air Conditioning & Plumbing technician backed by our 100% service guarantee* to help solve the problem. 

8. Damaged Drip Pan 

Air conditioners are made to last, but nothing lives forever. If you possess an AC that is 12 years or older, the drip pan could be damaged or corroded after years of normal use. If the drain pan has holes in it, a water leak could appear as condensate seeps directly through it. Service Experts Heating, Air Conditioning & Plumbing can replace the drain pan and ensure your AC gets back to working like it’s supposed to. 

Our Experts Can Meet All Your Air Conditioning Repair Needs 

Whatever the reason why your AC is leaking water, Service Experts Heating, Air Conditioning & Plumbing can fix the problem. We’ll troubleshoot and fix your air conditioner, getting it back to running again without delay. 

Our technicians are well trained, knowledgeable and certified to provide dependable work. We have full confidence in our repairs—in fact, we back up everything we perform with a one-year 100% Satisfaction Guarantee!* 

We’ll even talk about enrolling in a worry-free membership plan. This can help you catch AC issues, like water leaks, sooner so you can avoid future breakdowns while keeping your house cool. 

Contact us at 866-397-3787 to schedule your air conditioning appointment in North America today! 

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