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Why Is My AC Leaking Water Inside?

· By Service Pros of America
HVAC technician kneeling at an outdoor AC unit beside a South Florida home

Why is my AC leaking water inside the house?

Your AC leaks water inside because the water it pulls from the air is not leaving the house the way it should. The most common causes are a clogged condensate drain, a frozen coil that thaws and overflows, a cracked or rusted drain pan, or a system that is not running as designed. A technician can tell which one in a single visit.

Why does a Florida AC make so much water?

On a humid day, your AC can pull gallons of water from the air. That water collects in a pan and flows out through a small drain line. When any part of that path stops working, the water goes somewhere else: onto the floor, down a wall, through the ceiling.

Gloved hands spraying cleaner and scrubbing the coil of an AC unit
Cleaning and sanitizing an AC coil

What causes an AC to leak water?

You do not need to diagnose it. But knowing the families of causes helps you describe it to us.

  • A clogged drain line. Algae and slime grow in the line. Over a season it narrows, then blocks.
  • A frozen evaporator coil. The cold coil ices over from poor airflow or low refrigerant. When it thaws, the water overshoots the pan.
  • A damaged drain pan. Pans rust and crack, especially in older attic units.
  • A failed safety switch. It is supposed to shut the system off when water rises. If it does not work, nothing stops the overflow.
  • An installation problem. An air handler that is not level or a drain that is not sloped right can leak from day one.
  • Dirty equipment. A coil and blower coated in dust push the system into trouble.

What does water leaking from your AC look like?

  • Water pooled under the indoor unit
  • A brown or yellow stain on the ceiling, often below an attic unit
  • A dripping sound inside a wall or above a vent
  • Water at the base of a closet air handler
  • A musty smell that gets worse each time the AC runs
  • Ice on the unit or the refrigerant line

If you see any of these, turn the AC off at the thermostat and call. Running it makes more water.

Is an AC leak serious?

Yes, and in Florida it gets serious fast. Drywall and insulation soak up water. Mold can start within days in humid air. In a condo, a leak can drip into the unit below and become a dispute and an insurance claim. It is far cheaper to fix a drain line than to replace a ceiling.

Technician checking refrigerant pressure with gauges at an AC condenser
A licensed technician checking the system

What do we see in Hollywood and Hallandale Beach?

In the condo towers and smaller buildings around Hollywood and Hallandale Beach, leaks usually come from drain lines that have not been cleaned in years. People search for "AC leak damage Hollywood" or "Hallandale AC leak" after the water has already reached a neighbor. If that is where you are, we find the cause and tell you what we saw so you can pass it along to your association or insurer.

How does it work?

1. Call or book online. Call {PH} or book online. Tell us where the water is and turn the AC off. 2. A technician comes out. A licensed technician finds the source with real tools and explains it. 3. We fix it. We repair the cause and confirm the system drains properly before we leave.

Where do we send technicians?

We send technicians to homes and businesses across both counties, with the closest crews staged around the cities below. Call (954) 658-9511 and we will tell you how soon someone can be at your door.

Broward County: Hollywood, Fort Lauderdale, Pembroke Pines, Davie, Plantation, Miramar

Miami-Dade County: Hallandale Beach, Aventura, North Miami Beach, Miami, Hialeah

Licensed Florida HVAC contractor CAC1817184. Call (954) 658-9511, or see our AC repair service.

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