A ceiling stain under the attic unit in Ortega: what it costs to wait a week
A water stain is an air conditioner asking for help politely. In a Jacksonville July, the polite phase lasts about a week.
What the stain is, and is not
A brown ring on a plaster ceiling in Ortega, Avondale or Riverside, directly below the attic hatch, in July. It is not the roof; it has not rained in three days. It is the air handler on its platform in the attic, and specifically it is the condensate: the water the system pulls out of Jacksonville’s air, several gallons on a humid day, which is supposed to run down a small PVC line and out beside the house. Something in that path has stopped it, and the overflow has found the ceiling.
In a newer house the symptom is less dramatic: a puddle around the air handler in the garage, a wet closet floor, a float switch that has shut the system down and left the house warm. The cause is the same. The historic districts just lack the switch and have more to ruin.
What a week of waiting costs
Water damage compounds, and a Jacksonville July keeps producing water every hour the system runs.
Day one. A damp spot. The pan is overflowing at the rate of a slow drip. Cost to fix now: a drain-line clearing and, ideally, a float switch, which is a small repair.
Day three. The plaster is saturated and the ring is spreading. In an Ortega house the ceiling may be original 1910s lath and plaster; once it sags, it does not come back. Add a plaster repair and paint.
Day five. Water has run along the attic platform and into the insulation, which is now wet and useless over several square feet. If the platform is wood, it is swelling. Add insulation replacement, possibly a new platform.
Day seven. The air handler cabinet has been sitting in standing water. Rust begins on the cabinet and the blower housing; the electrical compartment may have been wetted. Mold has started in the wet insulation and on the wet plaster, which in a house with children or allergies becomes a remediation conversation. What began as a small repair is now a small renovation.
The system itself may also have shut down by now if a float switch exists, which means the house is at 84 degrees on top of everything else.
What to do today
- Turn the system off at the thermostat. The water stops when the cooling stops.
- Find the drain line’s outdoor end, a short PVC pipe near the condenser, often dripping in normal operation. If it is dry while the system has been running, the line is clogged.
- Clear it if you can: a wet-dry vacuum sealed over the outdoor end for a minute pulls most clogs. Then pour a cup of white vinegar into the access tee at the air handler.
- Get the water off the ceiling: a bucket under the drip, a towel on the floor, a small hole punched in the center of a bulging stain to let it drain in one place rather than ten.
- Do not go up into a wet attic to work on a live air handler. The platform may be soft and the electrical compartment may be wet.
If the vacuum clears it and the outdoor stub starts dripping again with the system running, you have bought time. Still call, because the clog will be back by September without a cleaning and a switch.
What the fix involves, and how we stop the repeat
The visit clears the line properly, including the trap, which a vacuum from outside often leaves half-full of the algae that grows in Jacksonville’s warm, wet drain lines. We check the primary pan for cracks, which on a twenty-year-old air handler are common. Then the prevention: a float switch on the primary drain and, where the attic platform allows it, a secondary pan with its own switch. On an Ortega or Riverside attic install over plaster, we consider that mandatory, and we raise the platform or move the unit if the attic has been catching flood-driven moisture from below. In garages and closets a switch is the whole answer.
A spring maintenance visit that flushes the line before June is what keeps the ceiling dry in the first place. Ask what a Cook’s maintenance agreement includes and costs; the flush and the switch are what we would want on every attic system in the historic core. [[CONFIRM WITH JERRY]]
Water-leak questions from Jacksonville attics and closets
How much water does a Jacksonville air conditioner actually produce?
On a muggy July day a typical home system pulls several gallons of water out of the air. All of it goes down a drain line roughly the diameter of a garden hose, which is why a partial clog overflows the pan within hours.
Can I clear the drain line myself?
Often. Find the drain’s outdoor end, usually a PVC stub near the condenser, and pull the clog with a wet-dry vacuum sealed over it. Pour a cup of plain white vinegar into the indoor access tee afterward. If water keeps coming, the clog is deeper or the pan is cracked.
Why does this happen more in the historic neighborhoods?
Retrofitted systems in Riverside, Ortega and Avondale sit on improvised attic platforms over plaster ceilings, often with no secondary pan and no float switch, because none was required when they went in. The first clog goes straight through the ceiling.
Is a stain always the AC?
In summer, almost always. In a storm it can be the roof, and after a hurricane it can be both. A stain that grows on dry days and stops when the system is off is condensate.
Ring on the ceiling?
Turn the system off and call {{phone}}. We'll clear it today, and fit the switch that keeps it from happening again.