How a small clog becomes a soaked ceiling
Cooling coils shed water as they work, and a drain carries it away. Algae and debris can clog that drain, so the pan fills and spills. Because most air handlers sit in an attic, closet or garage, the overflow usually soaks insulation and drywall for a long time before a stain appears.
What the drying crew does
Technicians find the wet path with a thermal camera, drain any sagging ceiling and remove the insulation and drywall that stayed soaked. Dehumidifiers pull moisture from the closet and the rooms below, and readings confirm the cavity is dry before anything is closed up.
Stopping a repeat
The drying crew handles the water, and an HVAC technician clears the drain, checks the pan and tests any safety switch. Both steps are needed. For wet ceilings see ceiling leak water damage, and for the drying stage see structural drying or the Roswell water damage hub.



