AC Condensate Leak Water Damage in Holly Springs, NC

Many two-story homes here have an air handler in the attic, and sometimes a second one in a closet or the crawl space. Through a long, humid summer the coil drips steadily into a pan that drains outside through a small PVC pipe. Algae and dust clog that pipe, the pan fills and the water spills onto the attic floor.

Why condensate leaks get missed

Most attic units sit over a secondary pan with a float switch that should shut the system off when the pan fills. A rusted pan, a switch that was never installed or one that stuck lets water run onto the insulation instead. The first sign is often a brown ring on the ceiling under the unit, or the AC quitting on a hot afternoon.

• Clogged condensate drains, often from algae
• Rusted or cracked secondary drain pans
• Missing or failed float switches
• Sweating ducts and fittings in a hot attic

Drying after a condensate overflow

Condensate picks up dust and microbes from the coil and pan, so it is treated as Category 2. The drying team removes wet insulation, dries the attic framing and the ceiling drywall, and opens the ceiling if it sags or stays wet. A unit in a closet or crawl space wets walls and floors instead, and the same drying rules apply. See ceiling leak water damage for how ceilings are handled.

The HVAC technician clears the drain and fixes the pan or switch; the restoration team handles the water damage.

Keeping the drain clear

Many HVAC service visits include flushing the condensate drain, and a float switch on the pan is cheap protection. The EPA's indoor air quality page explains why indoor humidity matters, and weather.gov's heat safety page covers staying safe if the AC quits in July. For planning numbers, use the water damage cost calculator.