Why Is My Air Conditioner Leaking Water

If you’ve ever asked yourself, “Why is my air conditioner leaking water?” — you’re not alone. This is a common problem during hot summer months, especially in areas where humidity and usage are high. In this blog, we’ll cover the most common causes, the signs to watch for, and what you can do to prevent further damage to your HVAC system.

AC Leaking Water Inside the House? 

A leaking air conditioner — especially when your AC system is dripping water inside may seem like a small issue, but it can lead to water damage, mold, or even a full system shutdown. If you notice water dripping near your indoor unit, don’t ignore it. This is why you should take steps as soon as possible. But before we get down to solving the problem let’s discuss some common issues.

Clogged Drain Line 

One of the most common causes of AC water leaks is a clogged condensate drain line or a disconnected drain line. Dirt and algae can block the drain pipe, causing excess water to back up and leak out of the drip pan.

Try flushing the line using a wet/dry vac—here’s a recommended option from Home Depot—or call for professional help if you notice persistent clogs.

Dirty Air Filter 

A dirty air filter or clogged air filter can reduce proper airflow, which causes your evaporator coil to freeze. When the ice melts, it results in water overflow.

To prevent this, follow a routine regular maintenance schedule and replace your filters at least once every 1–3 months.

 Low Refrigerant 

Low refrigerant levels or a refrigerant leak can cause a frozen evaporator coil, which leads to water leaks once the coil melts. Symptoms may include warm air coming from your vents or a hissing sound near your air conditioner unit.

This type of leak requires AC repair by a professional HVAC technician.

Rusted Drain Pan

Over time, the condensate pan or catch pan can start to rust or crack especially in older units. When you have a damaged drain pan, it won’t collect water droplets the way it should, which can cause leaks around the main unit and floor drain

Uneven Unit Placement

If your AC unit isn’t installed in the right place or is tilted, water flow won’t drain correctly and may pool inside. Improper installation is a common cause of water leakage in central AC systems.

If you’re dealing with an active leak, don’t wait. Contact our customer service team for fast, local emergency service. We’re here to protect your Indoor Air Quality, your comfort, and your investment.

Let’s be real — seeing water under your AC unit can feel stressful. It’s easy to think, “Is this normal? Or is something broken?” we made this blog to help with exactly that.

It walks you through the most common reasons your air conditioner might be leaking, like a clogged drain line or a frozen coil, and what you can actually do about it — without jumping straight to calling for repairs. But if it is serious, you’ll know when it’s time to call someone in.

It’s honest, clear, and written to make things easier, not harder. Hope it helps.

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