A closer look
Locate the water source and protect the space
Water around the indoor unit may come from a blocked drain, a drain-pan problem or melting ice. Finding the source matters because clearing a drain alone will not resolve every cause.
The assessment follows the condensate path and looks for conditions contributing to the leak. If water is near wiring, stay clear of the area and arrange service rather than opening electrical panels.
Common causes of an AC water leak
- A clogged condensate drain line
- A cracked or rusted drain pan
- A frozen evaporator coil that melts and overflows
- A disconnected or damaged drain line
- A failed float switch or safety switch
- Very dirty air filters causing icing
What to do right away
- Turn the AC off at the thermostat to stop more water forming
- Place a towel or container to catch the water
- If water is dripping from a ceiling, turn off the system and call promptly
- Do not ignore a small leak; it can grow
Why this matters in attics and closets
Many Houston homes have air handlers in the attic or a closet. A slow leak there can go unnoticed until stains appear on the ceiling or walls, so a leak is worth addressing early.