Short answer
Water leaking from an indoor AC unit is usually a clogged condensate drain line, a cracked or rusted drain pan, or a frozen evaporator coil that drips as it thaws. Turn the system off, dry the area, and check the drain line; persistent leaks need a technician.
Clogged drain line
Algae and debris build up in the line. A wet/dry vacuum at the outdoor end often clears it.
Drain pan
Older pans rust or crack.
Not sure it is safe to keep running? A local technician can check it today.
Call NowFrozen coil
Low refrigerant or poor airflow freezes the coil; it drips when it thaws.
- Check the filter
- Make sure vents are open
- Turn off and let it thaw
Attic units
Leaks from attic units can damage ceilings fast. Act quickly.
Related questions
Can I pour vinegar in the drain line?
Many homeowners do as maintenance; check your manufacturer's guidance.
Is a frozen coil serious?
It stops cooling and can damage the compressor if ignored.
Services that fix this
Central AC Repair
Systems that will not start, will not cool, freeze up, short-cycle or leak water.
Central AC repair in Fountain Valley
Refrigerant Leak Repair
Find and fix leaks instead of topping up refrigerant every summer.
Refrigerant leak repair in Fountain ValleyThis guide is general information for homeowners, not a diagnosis of your system. For anything involving gas, carbon monoxide, electricity or active leaks, stop and call a qualified professional.