X
If you’ve noticed water pooling around your air conditioner this summer, you’re not alone. Water leaks from AC units are a frequent issue for homeowners in Olympia, especially during warmer months when cooling systems run longer and harder. While a small puddle might not look like a big problem, ignoring it can lead to bigger concerns like water damage, mold, or system breakdowns.
The good news is that this type of leak usually points to a manageable issue. Most AC water leaks come from a small list of problems that can be solved or prevented with the right approach. The key is catching it early before it starts causing structural or mechanical harm. Below, we’ll explain some of the most common reasons this happens and what steps can be taken to stop the leak and protect your cooling system from more serious damage.
There’s usually a specific reason behind water leaking from an AC unit. Homes in Olympia often deal with humidity, dirt, or older parts in their HVAC systems, all of which can lead to water buildup when something isn’t working right. Here are the most common causes:
Every AC creates condensation as it cools your home. The moisture normally drains out through a thin pipe called the condensate drain line. Over time, this pipe can clog with dust, mold, or debris like insulation or pet hair. When it gets blocked, the water backs up and starts spilling into your home. You might notice water collecting near the indoor unit or a musty smell near the vents if this is the problem.
The condensate pan is supposed to catch water droplets before they go down the drain pipe. But if the pan becomes rusted, cracked, or knocked out of position over the years, it can’t do its job. This leaves the water with nowhere to go except down into your floorboards or walls. Check for signs of rust, or if you're able to see the pan, look for pooled water that doesn’t drain properly.
When refrigerant levels get too low, the evaporator coil can freeze up. Once that frost melts, it causes a sudden flood of water that the system’s pan and drain can’t handle at once. Low refrigerant often leads to inconsistent temperatures and longer run times, which can worsen the leak. This kind of leak may feel sudden, but it builds up over time as the refrigerant level keeps dropping.
A clogged air filter forces the system to work harder and reduces airflow over the coil. Reduced airflow can cause the coil to freeze just like low refrigerant does. When the ice melts, it causes the same overflowing problem. If your AC filter looks gray or has visible buildup, it could be one of the reasons for excess water.
Leaks can start small but eventually lead to damage behind walls, warped wood flooring, or the growth of mildew and mold. An AC system in Olympia that’s leaking water shouldn’t keep running until the issue is found and corrected. Systems wear down faster when running in poor condition, and clogging or warping won’t go away on its own. Addressing the source right away helps prevent bigger costs and keeps the cooling system dependable when you need it most.
When water is leaking from your AC, quick action keeps things from getting worse. Letting it sit can damage walls, ceilings, and even the AC unit itself. That’s why knowing what to do right away can help minimize the impact.
Start with these steps:
First, shut the system down at the thermostat. Running the AC while it’s leaking may cause damage to electrical parts or worsen any internal problem.
Use a mop, towels, or a wet/dry vacuum to remove water around the base of the indoor unit. The longer the water sits, the more likely it is to seep into flooring or walls and cause damage.
Pull out the air filter and look at its condition. If it’s covered in dust or looks dark gray, replace it right away. A clean filter helps maintain airflow and prevents the evaporator coil from freezing again.
If it’s accessible, look for any water backing up into the drain line or signs of mildew buildup. In some cases, a simple flush can clear a slow clog, but significant blockages or mold growth require attention from our professionals.
If you’ve done these steps and the leak doesn’t stop or returns shortly after, the issue is likely connected to the coil, refrigerant, or internal drainage. These situations shouldn’t be handled without proper tools and training. Calling in our technicians helps catch problems early and prevents recurring leaks.
Once the immediate issue is under control, preventing leaks from returning should become the main focus. Simple steps throughout the year can keep your AC in great shape during the hot weather in Olympia.
Here are a few tips to help stop water leaks before they start:
Have your system inspected and serviced by our technicians at least once a year. A full tune-up includes coil cleaning, drain line inspection, refrigerant level checks, and performance testing. These check-ins catch smaller problems before they turn into bigger ones.
For homes with average use, swapping out filters every 1 to 3 months keeps airflow strong and your system clean. If you have pets or allergies, you may need to change them more often.
Periodically check the line or have our professionals flush it as part of regular maintenance. A clear drain line lets condensation flow out easily and helps you avoid unexpected leaks on hot days.
If your AC isn’t cooling as well as it used to or you notice ice around the coils, refrigerant may be low. Left alone, this turns into bigger issues including dripping water and coil damage. Our trained professionals can safely check and recharge the system to get it back on track.
Following these steps gives you peace of mind during the summer. Even if nothing seems wrong right now, making these actions part of your yearly routine reduces wear and helps your system run more efficiently.
Water leaking from your AC is a warning sign that warrants attention. Most of the time, the root cause is something fixable, like a clogged drain or dirty filter. But these small problems can quickly become major if they're not handled early. Taking action as soon as you spot moisture around your unit is the best way to stop damage and prevent further discomfort inside your home.
Being proactive with AC maintenance not only helps you avoid leaks but also boosts the overall life and performance of your system. Homes in Olympia benefit when the AC runs smoothly all summer long without the headache of cleanup or unexpected repairs. Stay ahead of common issues, and your cooling system will take care of the rest.
If you notice water leaks or other issues with your AC, taking prompt action prevents further damage and keeps your home comfortable. For dependable AC repair in Olympia, trust Quality Temp Heating and Cooling LLC to accurately diagnose and resolve the issue. For a quick estimate or to book a service visit, please contact us today.