The following issues can all be the cause of your air conditioning leaking water:
– A clogged condensate drain
From time to time your condensate drain may become partially blocked or completely clogged due to a buildup of dirt, rust, algae, and other debris.
– Disconnected drain line
If your air conditioner was improperly installed, its drain line can loosen over time and cause the pipe to disconnect from its connection within your air conditioner. Similar to when the condensate drain is clogged, a disconnected drain line may cause your air conditioner to leak.
– Cracked condensate drain
Over time your condensate pan may rust and crack. When this happens, your drain pan is no longer sealed and could cause water to leak from your air conditioner.
– Dirty air filters
A dirty air filter restricts airflow over the evaporator coils. As a result, the coils get too cold and freeze over. When they melt, excess moisture drips into the condensate pan and cause it to overflow.
– Low refrigerant levels
Similar to a dirty air filter, low refrigerant levels result in a low amount of pressure in your air conditioning system, causing the evaporator coils to freeze over. If your evaporator coils freeze, it could cause the drain pan to overflow and leak water.