If you’ve noticed water pooling around your AC unit, don’t ignore it. An AC unit leaking water can be a sign of a minor issue—or a warning of a more serious problem. Either way, it’s something you’ll want to address quickly to avoid damage to your system, your home, and your wallet.
Let’s look at why this happens and what you can do next.
Why Is My AC Unit Leaking Water?
First: Where Is the Leak Coming From?
Before jumping to conclusions, it’s important to identify where the leak is happening. Is water pooling near your indoor unit (air handler) or is the outdoor unit (condenser) the source?
- Air Handler Leaking (Indoor Unit): This is the most common situation and usually indicates a clogged drain line, frozen coil, or full drain pan. The air handler, typically located in the attic, garage, or utility room, houses the evaporator coil, blower motor, and air filter.
- Condenser Leaking (Outdoor Unit): It’s less common to see water pooling here unless it’s normal condensation or the result of a frozen evaporator coil that has thawed. The condenser unit, usually found outside the home, contains the compressor, condenser coil, and fan.
Let’s look at leaks related to the indoor air handler, since that’s where the majority of residential AC water issues originate.
Is It Normal for an AC Unit to Leak Water?
A small amount of condensation around your air conditioning unit is normal, especially during Florida’s humid months. But visible leaks or puddles forming under or near your air handler aren’t something you should overlook.
When your AC is functioning properly, the moisture it pulls from the air drains safely through a condensate line. If that line gets clogged or the system is compromised, water can back up and leak into your home.
Common Issues: AC Unit Leaking Water (Indoor Unit)
1. Clogged Condensate Drain Line
Over time, algae, dirt, or debris can clog the drain line, causing water to back up and overflow inside your home. This is one of the most common reasons for an AC water leak.
2. Dirty Air Filter
When the air filter is clogged, airflow gets restricted. This can cause the evaporator coil to freeze—and when it melts, it may release more water than the drain pan can handle.
3. Damaged or Rusted Drain Pan
If your system is older, the drain pan that catches condensation may be cracked or rusted through, allowing water to drip through instead of draining properly.
4. Low Refrigerant Levels
Low refrigerant can lower the pressure in your system and cause the evaporator coil to freeze. As with a dirty filter, when the coil thaws, it may lead to excessive water buildup.
5. Improper Installation or Leveling
If your AC unit wasn’t installed level or has shifted over time, water might not drain correctly, leading to leaks.
AC Unit Leaking Water? Here’s What To Do
If you’ve discovered your AC unit leaking water, it’s important to act quickly. While some causes are simple fixes, others may lead to electrical damage or mold growth if left unchecked. Addressing the issue right away can save you time, money, and bigger headaches down the road.
- Turn off the unit to prevent electrical hazards and further damage.
- Check the air filter and replace it if it’s dirty.
- Inspect the drain line for visible clogs or backups (if accessible).
- Call Wayne Martin and Son Signature Air Conditioning to inspect the unit, clear the drain line, and check for refrigerant or coil issues.
If you’re in Fort Myers or Cape Coral and notice your AC leaking water, Wayne Martin and Son Signature Air can respond quickly and help you avoid major damage. We offer fast, honest service and can diagnose the issue on the spot.
Prevent AC Leaks with Regular Maintenance
Routine maintenance is the best way to prevent water leaks from your air conditioner. Annual tune-ups include drain line checks, coil inspections, and filter replacements—all things that help keep your system running cleanly and efficiently.
Don’t wait until water damage forces an emergency repair. Schedule your service today and stay ahead of costly breakdowns.
Is your AC unit leaking? Need help now? Contact Wayne Martin and Son Signature Air for AC service in Fort Myers, Cape Coral, and surrounding Southwest Florida areas.