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Bartels Heating & Cooling Blog

What Can Cause An AC to Leak Water?

If you notice water pooling around your air conditioning unit, it’s a sign that something is amiss and you might need AC repair in Hamilton! Air conditioning water leaks can lead to damage to your property and potentially affect the performance of your cooling system.

Let’s take a look at seven of the common causes of AC water leaks.

1. Clogged Condensate Drain Line

One of the primary causes of AC water leaks is a clogged condensate drain line. The condensate drain line is responsible for removing excess moisture produced during the cooling process. Over time, this drain line can become clogged with dirt, debris, algae, or mold, inhibiting proper water drainage. As a result, water backs up and may overflow, leading to leaks around the AC unit.

2. Dirty or Frozen Evaporator Coil

The evaporator coil is located inside your AC unit and plays a crucial role in removing heat and humidity from the air. When the evaporator coil becomes dirty or gets covered with dust, it can hinder proper heat exchange and cause the coil to freeze. As the ice melts, it can overwhelm the drain pan and result in water leakage.

3. Damaged or Disconnected Drain Pan

The drain pan is situated beneath the evaporator coil and collects condensate water. If the drain pan becomes damaged or cracked, it can lead to water leakage. Additionally, a disconnected or improperly positioned drain pan can cause water to overflow and leak onto the floor.

4. Improperly Installed or Sized AC Unit

An AC unit that is not properly installed or sized for your space can contribute to water leakage. If the unit is too large, it may cool the air too quickly, leading to rapid condensation that overwhelms the drainage system. Conversely, an undersized unit may struggle to dehumidify the air adequately, resulting in excessive condensation and water leaks.

5. Malfunctioning or Blocked Condensate Pump

Some AC systems, particularly those in basements or low-lying areas, use a condensate pump to remove water from the system. If the condensate pump malfunctions or gets blocked, it can impede water drainage, causing leaks around the AC unit.

6. Low Refrigerant Levels

Low refrigerant levels can lead to the evaporator coil freezing, which, as mentioned earlier, can result in water leakage. If your AC unit is leaking water and you notice other signs of refrigerant issues, such as reduced cooling performance or hissing sounds, it’s important to have a Bartels Heating & Cooling technician inspect and address the problem.

7. Improper Slope or Leveling

Proper installation of the AC unit is crucial to ensure water flows correctly through the drainage system. If the unit is not properly sloped or leveled, it can affect the drainage process, leading to water leaks.

AC water leaks are a common issue that homeowners in Hamilton, OH, may encounter. By understanding the potential causes behind these leaks, you can take appropriate action to resolve the problem. If you notice water pooling around your AC unit, it’s recommended to turn off the system and contact a qualified technician. 

Contact Bartels Heating & Cooling today to schedule your maintenance or repair appointment!

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