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Why Is My Air Conditioner Leaking?


As the summer heat intensifies, the last thing you want is for your air conditioner to start leaking. Not only can this issue disrupt your comfort, but it can also lead to costly repairs if left unattended.

In this blog, we’ll explore the common reasons behind air conditioner leaks and provide you with practical tips to troubleshoot and resolve the issue.

Clogged Condensate Drain Line

A clogged condensate drain line is one of the most common causes of air conditioner leaks. Over time, dirt, debris, and algae can accumulate in the drain line, obstructing proper water drainage.

You can resolve this issue by trying the following:

  • Locate the condensate drain line and inspect it for any visible clogs.
  • Using a wet/dry vacuum or a pipe cleaner, gently remove the clog.
  • Flush the drain line with a mixture of equal parts water and vinegar to prevent future clogs.

If the problem persists, it is recommended to contact a professional HVAC technician to perform a thorough cleaning.

Improperly Installed or Damaged Drain Pan

A damaged or improperly installed drain pan can also contribute to air conditioner leaks. The drain pan is responsible for collecting condensation and redirecting it to the drain line. If the pan is cracked, misaligned, or damaged in any way, it can result in water leakage.

To address this issue, do the following:

  • Inspect the drain pan for any visible signs of damage.
  • If the pan is damaged, replace it with a new one of the appropriate size and specifications.
  • Ensure the drain pan is properly aligned and securely in place.

If you are unsure about the condition of your drain pan or need assistance with replacement, it is advisable to consult a professional HVAC technician.

Frozen Evaporator Coil

A frozen evaporator coil can cause water to overflow and leak from your air conditioner. This issue is often caused by restricted airflow or low refrigerant levels.

You can address this problem by following these steps:

  • Check the air filters and clean or replace them if necessary.
  • Ensure that all supply and return vents are open and unobstructed.

If the problem persists, contact a professional HVAC technician to inspect and recharge the refrigerant levels. Remember, refrigerant handling should only be performed by certified professionals to ensure safety and compliance.


By following these troubleshooting tips, you can effectively address air conditioner leaks and restore your cooling system's optimal performance. However, if you encounter persistent leaks or are unsure about performing any of the steps mentioned, it is always best to seek professional assistance.

At Bay Heating & Air Conditioning, we specialize in diagnosing and resolving air conditioner issues. Our team of experienced technicians is well-equipped to handle any air conditioner leak problem efficiently and effectively.

Contact us today to schedule a service appointment.

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