As your air conditioner cools your air, it also pulls excess moisture out of your home. That’s why it’s perfectly normal for AC systems to produce a small amount of condensation during operation. But if you’re seeing water dripping, pooling, or leaking around your unit, that’s not part of the deal. In Florida, where humidity levels remain high year-round, AC systems have to work overtime. That extra stress makes water-related problems even more common.
As your local Florida HVAC experts, we’re breaking down the reasons your air conditioner might be leaking water and how to know when it’s time to call in the team at American Air, Plumbing, and Electrical for professional AC service.
Clogged Condensate Drain Line
Your air conditioner has a drain line that carries away the condensation it collects. Over time, especially in humid climates like Florida, that line can fill up with dirt, mold, algae, or debris. When the line becomes clogged, the moisture has nowhere to go. Instead of draining outside as it should, it backs up and overflows inside your home. This is one of the most common causes of indoor AC leaks, and it’s often preventable with regular cleaning.
Dirty or Clogged Air Filter
A clogged air filter might not seem like a big deal, but it can cause serious problems. When airflow is restricted, the evaporator coil can get too cold and freeze. Eventually, that ice melts, releasing more water than the system can handle. This leaves you with puddles near your indoor unit and a system that’s working harder than it should. Dirty filters also make your AC less efficient overall, increasing wear and tear on critical parts.
Low Refrigerant Levels
If your system is low on refrigerant, it will operate under lower pressure, which can cause the evaporator coil to freeze. As with other freezing issues, this leads to water leaks when the ice melts and overwhelms the drain pan. Refrigerant issues are not a DIY fix; only licensed HVAC professionals can safely inspect and recharge your system.
Frozen or Damaged Evaporator Coil
The evaporator coil is the part of your AC system that absorbs heat from the air inside your home, playing a key role in the cooling process by allowing refrigerant to evaporate and draw heat away. When airflow is restricted, refrigerant levels are low, or mechanical issues arise, the coil can become too cold and freeze over. As the ice melts, excess water can leak around the indoor unit, causing moisture damage. If freezing occurs frequently, it can eventually damage the coil, leading to poor cooling performance and potential system failure.
Cracked or Rusted Drain Pan
Older air conditioners are especially vulnerable to this one. The drain pan sits under the evaporator coil and collects condensation as it drips. But over time, the pan can rust, crack, or shift out of place, especially in systems that are 12 to 15 years old or older. If it’s not catching water properly, that moisture can leak directly onto your floor or ceiling. In many cases, the pan needs to be replaced to prevent ongoing leaks.
Improper Installation or Sloped Unit
An air conditioner that’s not installed level can create drainage issues from day one. If the system tilts in the wrong direction, water might not reach the drain line at all. Instead, it collects and spills where it shouldn’t. Poor installation practices can also lead to loose fittings or pinched lines, which may result in recurring leaks over time. If your AC has had issues since installation, this could be the issue.
High Humidity in Florida Homes
Air conditioning systems can struggle in a high-humidity environment like Florida. When the air holds more moisture than the system can handle, especially during rainy seasons or in older, less efficient homes, condensation can build up faster than the system can drain it. Undersized AC systems or those overdue for AC maintenance are particularly vulnerable to this issue.
Preventive Maintenance Tips to Avoid AC Leaks
While you can’t stop Florida’s humidity, you can take steps to keep your AC system running cleanly and efficiently. Regular upkeep goes a long way toward preventing leaks and catching problems early, so follow these tips for a leak-free AC:
- Change air filters regularly: Replace your AC’s filters every 30–90 days, depending on how often you run the system, whether you have pets, or if your home has allergy concerns. Clean airflow helps prevent freezing and improves overall performance.
- Schedule routine AC tune-ups: Our HVAC technicians inspect refrigerant levels, test the drain line, clean coils, and check for any red flags. Twice-a-year maintenance is especially important in Florida, where ACs run almost year-round.
- Have condensate drain lines professionally cleaned: Mold and algae love dark, damp places like your AC drain line. A quick cleaning every so often can prevent clogs before they cause backups.
- Keep the area around the air handler clean: Dust, storage bins, or clutter near the unit can trap moisture or reduce ventilation. Give your system some breathing room to reduce stress.
- Monitor for early warning signs: Drips, musty smells near vents, warm air when cooling is on, or uneven cooling throughout the house could all point to a developing drainage issue.
Request AC Repair & Maintenance
An AC leak might seem like a small issue, but it can lead to damaged drywall, soaked flooring, and even mold growth over time. Addressing leaks early prevents water damage, boosts efficiency, protects your equipment, and reduces the risk of breakdowns during Florida’s long cooling season.
At American Air, Plumbing, and Electrical, we offer expert AC repair and maintenance services for Florida homes. Our licensed technicians are experienced in identifying and fixing the root cause of AC leaks, from clogged drain lines to failing components. With upfront pricing, emergency cooling service, and a commitment to quality, we’re the trusted choice for AC care across the Orlando Metro Area.
Seeing signs of water around your AC unit? Contact the team at American Air, Plumbing, and Electrical today to schedule a professional inspection or AC tune-up.
