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Why is my air conditioner leaking?

July 4, 2017 8:00 am


Air conditioners don’t create cool air, they remove heat and humidity from the air. Through the cooling process, it is normal for condensation to collect on the evaporator coil. The condensation drips into a condensate or drain pan and then through a drain line to outside. If there is rust or a crack in the drain pan, or it is positioned incorrectly, water can leak into your cabinet and/or onto the floor. The drain line can also become blocked with dirt and debris, causing it to back up and overflow the drain pan.

Another common cause of leaking water is a clogged filter. A clogged filter restricts airflow, causing the evaporator coil to “ice up”. When the ice melts you’re left with water on the floor and potentially damage inside the furnace cabinet. Change the filter immediately and leave the system off until the ice has melted. Restart the unit and if the ice reoccurs, call us for service.

Icing up also occurs when the system is low on refrigerant. You could see ice on the evaporator coil, on the refrigerant lines or on the condensing unit outside. Again, turn the system off and allow it to thaw. Restart the unit; it will likely ice up again. Turn the system off, it must be completely thawed before it can be assessed, and call to book a service call.

If a leaking unit is left unchecked, permanent damage could be done to your equipment. The best course of action is to shut down the unit and have a licensed technician investigate. Rodman’s offer sales, service and maintenance of air conditioners and emergency service is available after hours. If you have questions or require assistance, please contact us.