Why Is My AC Leaking Water?

Finding a puddle of water under your air conditioner can be unsettling to say the least. Your first thought might be, “Why is my AC leaking water?!” While it can feel a bit alarming, the truth is that AC water leaks are one of the most common air conditioner problems.
Hot weather, high humidity, and shifting climate conditions can all push your AC to its limits and lead to leaks. That’s why Mike Watson Heating and Cooling is ready to step in and provide the help you need.
Common Causes of AC Water Leaks
- Clogged Condensate Drain Line
- Frozen Evaporator Coils
- Rusted or Damaged Drain Pan
- High Humidity
- Other Potential Causes
Clogged Condensate Drain Line
When your AC cools warm air, the evaporator coils pull out moisture, which forms condensation on the coils. That water normally drains into a pan and then flows outside through the condensate drain line. But if dirt or debris clogs that line, water backs up and can cause your system to leak.
You can clear small blockages at the end of the line with a wet/dry vac or by flushing it with a vinegar solution. To avoid these problems, it’s best to clean the drain line every few months and schedule routine maintenance with a reliable HVAC company.
Frozen Evaporator Coils
A frozen air conditioner is a common summer issue caused by low refrigerant, dirty filters, or restricted airflow. When these problems prevent warm air from reaching the evaporator coils, the coils freeze, and once the ice melts, water collects around your HVAC unit.
Preventive steps include replacing your air filter every 1–3 months, scheduling routine maintenance, and ensuring refrigerant levels are tested each year.
Rusted or Damaged Drain Pan
Did you know your AC’s drain pan can wear out over the years? When that happens, water may start dripping onto the floor. Small issues can usually be fixed with epoxy putty, but if the pan is too far gone, or you’re not comfortable handling the repair, it’s a good idea to let a local HVAC expert take care of it.
High Humidity
Too much humidity is tough on your AC. When the air is heavy with moisture, your unit works overtime to remove excess water. Ultimately, this means more water is produced and drained. The extra water can sometimes overflow the drain pan, freeze onto the coils, or even cause clogs from mold and algae growth.
The best way to solve this problem is with regular AC tune-ups. Keep up with routine maintenance, swap in fresh filters, and use a dehumidifier during humid stretches.
Other Possible AC Problems
Still noticing water around your AC even after checking the usual culprits? Sometimes the issue is bigger than a clogged line or dirty filter. A poor installation could mean your drain line isn’t correctly connected to the pan, or you may have a broken condensate pump that’s no longer pushing water out. When that happens, water builds up and spills over. The safest move is to have an HVAC technician take a look and fix the problem for good.
DIY Troubleshooting Tips for Homeowners
- Turn off the power
- Check and clear drain line
- Change air filter
- Inspect the drain pan
Always Start with Safety: Switch Off the Power
Safety should always come first when working on your cooling system. Before starting any troubleshooting, be sure to turn off your AC to ensure it’s safe to handle.
Step Two: Check the Drain Line and Remove Any Blockages
After shutting your AC down completely, check the drain line. You’ll usually find it as a PVC pipe running from your indoor unit to the outside or into a drain. Use a wet/dry vac to suck out any clogs, then rinse the line with vinegar and water to keep it clean. If you spot damage that’s beyond your comfort zone, don’t hesitate to call a pro. When you’re done, turn your AC back on and make sure water is flowing properly.
Step Four: Change the Air Filter
Changing your AC’s air filter is an easy DIY job that keeps your system running smoothly. Look for the filter slot, typically behind a vent cover near the blower. Open it up, remove the dirty filter, and insert the new one. Just be sure the arrows are pointing the right way before closing the cover.
Step Five: Inspect and Clean Drain Pan
Take a close look at your drain pan for cracks, rust spots, or small holes. If the damage is minimal, you can usually patch it with epoxy or sealant. But if the pan is badly worn or broken, replacing it may be the safest long-term fix.
If It’s Beyond DIY, Call in the Pros
If you’re dealing with issues like a refrigerant leak, electrical trouble, or broken components, skip the DIY approach. These types of repairs are not only dangerous to attempt but could also put your family’s safety in jeopardy; leave them to a trusted HVAC expert.
Stop Leaks Before They Start With Expert HVAC Care
Catching problems early is the key to avoiding bigger AC headaches. That’s why annual tune-ups are so important, they help find issues like low refrigerant or faulty hardware that can lead to leaks. In Wichita, the best time to book your AC maintenance is early spring. These yearly tune-ups help make sure your system stays cool and reliable all summer long and reduce unexpected breakdowns.
Frequently Asked Questions About Leaking AC Units
Is a Leaking AC an Emergency?
A little condensation around your AC is normal and not cause for alarm. However, if you notice a significant amount of water leaking from inside the unit, it’s a serious issue. In that case, contact an HVAC repair company immediately.
Can I Use My AC if It’s Leaking?
A little water around the drain line isn’t usually a big deal, and your AC can keep running if there are no other problems. But if you spot a big leak, notice electrical trouble, or suspect a refrigerant leak, turn the unit off right away and get in touch with the pros.
How Much Does it Cost to Fix a Leaking AC in Wichita, KS?
Repair costs for an AC leak can vary, depending on the type of leak and the level of damage involved.
Fix AC Leaks with Mike Watson Heating & Cooling
Seeing your AC leak can be stressful, but you don’t have to handle it alone. Whether it’s a clogged drain line, frozen coils, worn-out parts, or even weather damage, Mike Watson Heating & Cooling is here to deliver quick and reliable repairs in Wichita.