You’re walking past your air conditioning unit and notice a small puddle forming. It’s not raining. No one spilled anything. So… why is your AC leaking?
This is one of the most common HVAC complaints we hear during the summer at Aire Serv of Newark — and the good news is, in most cases, it's fixable. But that doesn’t mean it should be ignored.
Here’s what might be going on, and what to do next.
Is a Leaking AC Dangerous?
It can be. A little bit of condensation is normal for AC systems, but actual water leakage isn’t. If left untreated, it can cause:
- Water damage to your walls, ceilings, or floors
- Mold or mildew growth in your home
- Electrical issues or short circuits in your unit
- Reduced efficiency and higher energy bills
The key is to catch the issue early and deal with it before it turns into a bigger (and more expensive) problem.
Common Reasons Your AC May Be Leaking Water
1. Clogged Condensate Drain Line
This is the most common cause. Your AC removes moisture from the air and funnels it through a drain line. Over time, algae, mold, or debris can clog the line, causing water to back up and spill out.
What to do:
You can try clearing the line using a wet/dry vacuum — but if that doesn’t work, it’s time to call in a pro.
2. Dirty Air Filter
A clogged filter restricts airflow over the evaporator coil, which can cause it to freeze. When the ice melts, it can overflow the drain pan and lead to leakage.
What to do:
Check and replace your filter monthly during peak cooling season.
3. Low Refrigerant Levels
Low refrigerant can also lead to a frozen coil, and when it thaws — surprise, you’ve got water where it shouldn’t be.
What to do:
This isn’t a DIY fix. You’ll need an HVAC technician to check for leaks and recharge the system.
4. Damaged or Rusted Drain Pan
If your AC is over 10 years old, the drain pan could be cracked or rusted, which causes water to escape instead of draining properly.
What to do:
This is usually a quick replacement — but you’ll want a technician to inspect the full system for wear and tear.
5. Disconnected or Loose Drain Line
Sometimes, the drain line can come loose or disconnect entirely — especially if the unit has been bumped or jostled.
What to do:
A technician can reattach or replace the line and make sure it’s properly secured.
How to Prevent Future Leaks
Regular maintenance goes a long way in keeping your AC leak-free. Here’s what we recommend:
- Change your air filters every 30–60 days
- Schedule a seasonal AC tune-up
- Keep the area around your unit clean and clear
- Check for signs of water regularly (especially during peak cooling months)
When to Call the Pros
If your AC is leaking and you’re not sure why — or if you’ve tried basic fixes and it’s still happening — don’t wait. Water issues can get worse fast.
At Aire Serv of Newark, we offer expert diagnostics and repair services that get to the root of the problem, fast. Our licensed technicians are always just a call away, ready to restore your comfort and peace of mind.
Serving Newark and surrounding areas, Aire Serv is here to keep your AC running cool, clean, and leak-free all summer long.
