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 collected in a drain pan and moved through piping into your home’s drain system.

Unfortunately, faulty components or sludge buildup may cause the piping to become clogged. When this happens, water returns to the drain pan in your furnace or air handler. It can then spill into your home. This is namely troublesome if your furnace or air handler is up in the attic or above a finished ceiling.

In the bulk of homes, building codes require a secondary or safety drain pan that is installed underneath the furnace or air handler. This secondary drain pan possesses piping that is routed to the outside of the home. Most of the time, the outlet of the pipe is found above the outside of a window so it’s easily noticeable if water begins draining from this pipe outlet. It is not normal for this to occur. If you see water spilling from piping on the outside of your home, this is likely evidence 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 repair the issue. Some homes may also possess a safety device that can automatically shut off your AC in the event the drain becomes clogged. In this case your system will stop cooling unless the drain is free of any obstructions. Regardless, if you discover water leaking, be sure to set your thermostat to “off” to minimize any additional water damage and get in touch with a Winnipeg Supply Service Experts service provider to correct the issues.

Leaking air conditioners frequently do best with professional repairs, which is why we’re here to assist you at Winnipeg Supply Service Experts. We happily deliver Expert air conditioning repair across North America, backed by a 100% Satisfaction Guarantee.*

1. Condensate Drain Is Blocked

When hot, humid air reaches the evaporator coil, water forms on the chilly metal surface. At the end of the process, the water drains into a pan underneath the indoor coil in the furnace or air handler. As the cooling sequence occurs, the condensate flows out of the pan and into drain piping before the pan becomes full.

However, mold, mineral deposits, dirt and other debris can clog the drain. This keeps the water from draining away properly. Entrust the unclogging process to an Expert like Winnipeg Supply Service Experts to ensure it’s performed properly and without causing more damage. Service Experts can also put in a safety device that will automatically turn off your AC just in case the drain becomes clogged again in the future, thus preventing water damage within your home. Of course, consistent maintenance on your AC will help keep your condensate drain clear and unhampered.

2. Drain Line Is Disconnected

While uncommon, the drain line connection to the drain pan can become loose or disconnected. This can happen if someone is working nearby the unit or when swapping out the air filter. AC leaks might occur when the drain line is lose from the pan. Inspect your AC to find out if the drain line is still connected to the coil drain pan. If it is no longer connected, we recommend calling an HVAC technician to take care of this issue right away. Arrange an appointment with Winnipeg Supply Service Experts today.

3. Condensate Pump Isn’t Working

Some air conditioners use a condensate pump to properly drain the water. These pumps are necessary when the home’s drain system is found above the AC unit. Even if the drain is free of obstructions, water can back up in the pan and leak out if the condensate pump is inoperable. First, determine that the pump is being powered. If that’s not the root cause, the AC leak could be due to a broken condensate pump. You should call an air conditioning contractor like Winnipeg Supply Service Experts to resolve the issue.

4. Evaporator Coil Is Dirty or Damaged

If you see small drips in lieu of a bigger puddle nearby the outside of your furnace or air handler, water could be dripping off the evaporator coil rather than properly flowing into the drain pan and condensate line. This can be the case if the coils are grimy, 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 Winnipeg Supply Service Experts membership.

5. Low Refrigerant Level

If you discover a leak and the AC isn’t cooling enough, the refrigerant level may be low because of a leak. Air conditioners rely on refrigerant to create cold air, so getting it inspected regularly during seasonal maintenance is incredibly beneficial for the longevity of your unit. Without a full supply of refrigerant, the evaporator coils can freeze over and cause the drain pan to overflow as they thaw. Contrary to some expectations, your AC does not need to be recharged unless there is a leak. The system is sealed and recharging is only needed when a leak occurs in the system. Call Winnipeg Supply Service Experts as soon as possible to take care of AC refrigerant issues quickly.

6. Dirty Air Filter

Your air conditioner’s filter should be changed regularly to ensure adequate airflow. Without adequate ventilation, the evaporator coils could become too cold and freeze. The evaporator coils will then thaw, causing excess water to collect in the drain pan—potentially starting an overflow. To resolve this, try changing your air filter. If the problem remains, further repairs may be the best option. Luckily, HVAC technicians from Winnipeg Supply Service Experts are here to serve you, ensuring the problem gets fixed.

7. Outdoor Temperature Is Too Cold to Run AC

Air conditioners are built to provide enough cooling for warm weather. Running your AC when outdoor temperatures are 60 degrees Fahrenheit or below may cause the evaporator coils to freeze. Once thawed, the water and ice will drop off the evaporator coils and potentially create an overflow due to ice blocking the drain pan opening. If a water leak persists, schedule a Winnipeg Supply Service Experts technician backed by our 100% service guarantee* to help solve the problem.

8. Damaged Drip Pan

Air conditioners are manufactured to last, but nothing lives forever. If you possess an AC that is 12 years or older, the drip pan may 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. Winnipeg Supply Service Experts can replace the drain pan and ensure your AC gets back to working properly.

Our Experts Can Handle All Your Air Conditioning Repair Needs

Whatever the reason why your AC is leaking water, Winnipeg Supply Service Experts can fix the problem. We’ll troubleshoot and fix your air conditioner, getting it back to running again as soon as possible.

Our technicians are well trained, knowledgeable and certified to perform exemplary 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 suggest a worry-free membership plan. This could help you catch AC issues, like water leaks, faster so you can avoid future breakdowns while keeping your house cooler.

Contact us at to schedule your air conditioning appointment in North America today!

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