Your air filter is likely leaking water due to a problem with your air conditioning system's condensate management. According to our reference, there are a couple of common reasons:
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A clogged condensate pan or condensate drain line is the most typical reason.
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Water dripping off of the evaporator coils, while less common, can also cause a wet filter.
Let's break down each of these potential causes:
Potential Causes of a Leaking Air Filter
| Cause | Description | Solution |
|---|---|---|
| Clogged Condensate Pan or Drain Line | The condensate pan collects water that condenses from the evaporator coils. If the pan or the drain line connected to it gets clogged, the water can overflow and end up soaking your air filter. | Clear the clog from the drain line. You can often do this yourself using a wet/dry vacuum or a stiff wire. Consider having a professional inspect and clean the pan. |
| Dripping Evaporator Coils | If the evaporator coils are too cold, or the airflow across them is insufficient, condensation may form excessively and drip onto the filter. | Check for proper airflow. Ensure your vents are open and your blower fan is working correctly. Consider calling an HVAC technician to inspect the refrigerant levels and overall system performance. |
What to do if your air filter is wet:
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Turn off your HVAC system immediately. Running your system with a wet filter can lead to further damage and mold growth.
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Replace the wet air filter. A wet filter is ineffective and can become a breeding ground for mold and bacteria.
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Identify and address the source of the leak, as described above.
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Check for mold growth. Inspect the area around the air filter and the evaporator coils for any signs of mold. If you find mold, clean it up properly or contact a professional mold remediation service.
By addressing these potential causes, you can identify why your air filter is leaking water and take steps to fix the problem.
